Scientific Program

28th International Meeting of the Pediatric Colorectal Club 28th – 30th August 2021 Zappeion Megaron Athens, Greece HYBRID CONGRESS (in person and digital attendance) www.pccathens.com

SCIENTIFIC PROGRAM

Under the Auspices

PANHELLENIC MEDICAL MEDICAL ASSOCIATION ASSOCIATION OF ATHENS

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ARITI A.E. ΑΘΗΝΑ: Λεωφ. Τατοΐου 52, 13677 Αχαρνές δίπλα Τηλ.: 210 8002650 - Fax: 210 6207503 στον άνθρωπο www.ariti.gr - [email protected] WELCOME MESSAGE

Dear Colleagues and friends,

It gives us great pleasure to invite you to participate in the 28th International Meeting of the Pedi- atric Colorectal Club, which will take place at the Zappeion Megaron in Athens, Greece from 28th to 30th August 2021.

Diseases of the colon and rectum in children such as anorectal malformations, Hirschsprung’s disease, inflammatory bowel disease, idiopathic constipation and fecal incontinence present a special challenge to pediatric surgeons. Many of these diseases have a major impact on quality of life and warrant long-term follow-up and treatment into adulthood. In order to provide the best medical and surgical care to children with colorectal diseases, it is essential that we have the highest possible standards of education, training and research. The 28th International Meeting of the Pediatric Colorectal Club aims to provide up-to-date clinical and scientific information on all aspects of pediatric colorectal diseases and malformations to practicing pediatric surgeons, pediatric urologists, pediatricians, pediatric gas- troenterologists, basic scientists, nurses and patient support groups.

Athens is one of the most popular destinations in Europe, consistently featuring in all of the top ten most visited cities. Athens is also one of the world’s oldest cities, steeped in history and tradition, with numerous sightseeing treasures and excellent international transport links. The rich Greek heritage and its contemporary multicultural cosmopolitanism constitute Athens’ unique charm and character. The city’s myriad cultural offerings, archaeological sites, huge variety of attractions, a superb venue di- rectly located in the historic center and Greece’s undoubted appeals make Athens an ideal location for the 28th International Meeting of the Pediatric Colorectal Club.

We hope that many of you will be able to stay longer and participate in the 22nd European Congress of Pediatric Surgery, which will also take place at the Zappeion Megaron in Athens from 1st to 4th Septem- ber 2021.

Alexander Passalides Prem Puri Chairman, Local organizing committee Chairman, Scientific committee

3 INTERNATIONAL SCIENTIFIC BOARD

• Andrea Bischoff (Aurora, USA) • Arnold Coran (Ann Arbor, USA) • Devendra Gupta (New Delhi, India) • Michael Höllwarth (Graz, Austria) • Alberto Peña (Aurora, USA) • Prem Puri (Dublin, Ireland) (Chairman) • Risto Rintala (Helsinki, Finland) • Tomas Wester (Stockholm, Sweden) • Atsuyuki Yamataka (Tokyo, Japan)

LOCAL ORGANIZING CHAIRMAN

• Alexander Passalides (Athens, Greece)

LOCAL ORGANIZING SECRETARIAT

Mr. Gerasimos Kouloumpis Mr. Thanasis Liagkis Zita Congress & Travel S.A. Omirou Street 29 Peta Saronikou, 19001 Greece Phone: +30 2299440962 E-mail: [email protected], [email protected]

4 GENERAL INFORMATION MEETING TIME • Saturday, 28th August 2021 (19:30 Welcome reception) • Sunday, 29th August 2021, 08.45 - 18.00 (20:30 Social dinner) • Monday, 30th August 2021, 09.00 - 16.00

VENUE • Zappeion Megaron, Vasilissis Olgas Avenue, Athens, 105 57, Greece https://www.zappeion.gr/en/

LANGUAGE The official language of the meeting is English.

REGISTRATION DESK The registration desk will be located at the Zappeion Megaron and will be open as followed: • Saturday, 28th August 2021, 16:00 - 18:00 • Sunday, 29th August 2021, 08:30 - 18:00 • Monday, 30th August 2021, 08:30 - 16:00

MANUSCRIPT SUBMISSION Authors of accepted abstracts are invited to submit their full-length manuscripts for consideration of publication in Pediatric Surgery International (PSI). All manuscripts must be submitted to Pro- fessor Prem Puri ([email protected]) by 10th August 2021. The scientific committee will then decide on the basis of originality and scientific merit, which manuscripts will be accepted for publication in the congress issue of PSI. Presentation of your paper is not a guarantee of accept- ance for publication in PSI. Instructions for authors can be found here: https://www.springer.com/ journal/383/submission-guidelines.

NAME BADGES All participants should wear their name badge that will receive from the Congress Secretariat for the entrance in the Meeting Hall and Exhibition Area. According to the Greek legislation entrance to the Meeting Venue is allowed only to fully vaccinated participants showing a vaccination certificate (green passport).

SPEAKERS PREVIEW AREA All presentations will be made from a laptop on the podium of the Hall for compatibility reasons. All speakers should visit the Speakers Preview Area, located in the Meeting Hall, to deliver the usb stick of their presentation at least 15 min. prior to the presentation.

CERTIFICATE OF ATTENDANCE A digital certificate of attendance will be sent to all participants. 5 SOCIAL PROGRAM According to the Greek legislation entrance to social events venues (closed areas) is allowed only to fully vaccinated participants showing a vaccination certificate (green passport)

WELCOME RECEPTION ILIAS LALOUNIS JEWELRY MUSEUM ROOF TERRACE Saturday, 28th August 2021, 19:30

Address: Kallisperi 12 & Karyatidon Str., Acropolis 11742, Athens www.lalaounis-jewelrymuseum.gr/spaces-dining-events/

The Ilias Lalaounis Jewelry Museum (ILJM) is the first museum devoted to the art of jewelry in Greece and one of the very few of its kind in the world. The Museum acts as an international center for jewelry and decorative crafts, with an empha- sis on silver and goldsmithing as well as contemporary studio jewelry. The Museum is located under the sacred hill of the Acropolis at the footsteps of the Parthenon in two buildings.Today the ILJM permanent collection includes historic and contemporary jewelry and decorative arts. The Museum’s Roof Terrace on the third floor is an exclusive space with the most spectacular view. Its sizeable, open-air Terrace with its unique view of the Acropolis, the Parthenon and the Philopappos Hill creates an exceptional setting for any event.

SOCIAL DINNER

ATTIKOS GREEK HOUSE Sunday, 29th August 2021, 20:30

Address: Garivaldi 7, Acropolis, 117 42 , Athens https://ghattikos.gr/

The restaurant, known as the “Greek House” back in the ‘70s, was a hotspot of the Athenian life back then. Several years later the name “Attikos”, inspired by the cultural landscape of the surrounding area, was added to its initial name. By combining the heritage of the past with the constantly changing face of today, their desire for further progress keeps get- ting stronger. Having established family atmosphere and hospitable environment as the main philosophy of their business, without compromising the quality of food and service, ultimate goal of the business throughout all these years is to please the people who do not stop honoring the restaurant with their presence 6 MEETING VENUE

ZAPPEION CONFERENCE & EXHIBITION CENTER Zappeion (after the name of its benefactor, Evange- lis Zappas), was the first building (1888) to be erected specifically for the revival of the Olympic Games in the modern world (1896). The Zappeion Exhibition Hall has witnessed the history ATTIKOS GREEK HOUSE of Athens for the past 120 years. It has been a key site Sunday, 29th August 2021, 20:30 for some of the nation's most significant moments, like Greece’s accession to the European Economic Commu- nity in May 29, 1979. Zappeion has always been integrally linked to the Olympic Movement with the most recent renovation was carried out in connection with the Ath- ens Olympic Games of 2004 Even though its uses were varied: the coun- try's first state radio station, a hospital, store- house and later barracks it has become a landmark in the Greek capital, thus fulfilling the donor's initial wishes.

7 ATHENS

ATHENS is the historical capital of Europe, with a long history, dating from the first settlement in the Neolithic age. In the 5th Century BC (the “Golden Age of Pericles”) – the culmination of Athens’ long, fascinating history – the city’s values and civilization acquired a universal significance. Over the years, a multitude of conquerors occupied Athens, and erected unique, splendid monuments - a rare historical palimpsest. In 1834, it became the capital of the modern Greek state and in two centuries since it has become an attractive modern metropolis with unrivalled charm.

The “core” of the historic centre is the Plaka neighborhood (at the eastern side of the Acropolis), which has been inhabit- ed without interruption since antiquity. When you walk through the narrow labyrinthine streets lined with houses and mansions from the time of the Turkish occupation and the Neoclassical period (19th c.), you will have the impression of travelling with a “time machine”.

8 WORTH TO VISIT

• THE ACROPOLIS MUSEUM The Museum hosts its collections across three levels, as well as in the archaeological excavation that lies at its foundations. Located on the ground floor, the “Gallery of the Slopes of the Acropolis” houses finds from the sanctuaries that were established on the slopes of the Acropolis, as well as objects that Athenians used in everyday life from all historic periods. It also displays the votive offerings dedicated by the worshippers, such as the beautiful archaic Korai (depictions of young women), the Hippeis (horse riders), statues of the Goddess Athena, sculptures of male figures, marble reliefs, and smaller bronze and clay offerings. The Museum’s exhibition culminates on the third floor, in the glass-en- cased “Parthenon Gallery”. The relief sculptures of the Parthe- non frieze depicting the Panathenaic procession are exhibited in continuous sequence along the perimeter of the external surface of the rectangular concrete core of the Gallery. The me- topes, the marble slabs with relief representations from Greek mythology, are exhibited in between the stainless steel columns of the Gallery, which are the same in number as the columns of the Parthenon.

• PLAKA - THE NEIGHBOURHOOD OF THE GODS Hugging the base of the Acropolis, the area extends from Filomousson Square, roughly at the intersec- tion of Kidathinaion and Adrianou Streets, down to Monastiraki. The best way to see Plaka is to simply wander its lanes, chasing glimpses of the Acropo- lis between the neoclassical buildings, Byzantine churches, cafes, restaurants, and souvenir shops. The prime sights are, of course, the Parthenon and the Acropolis Museum. But do give yourself time to visit smaller gems that highlight less familiar aspects of Greek culture, like the Museum of Greek Folk Art, the Folk Instruments Museum and the fine private art and antiquities collections at the Frissiras and Kanellopoulos Museums.

9 SCIENTIFIC PROGRAM Saturday, 28th August 2021 16:00-18:00 REGISTRATION 19:30 WELCOME RECEPTION

Sunday, 29th August 2021 *p. for presentation, d. for discussion

08:45 OPENING CEREMONY

09:00-11:00 SCIENTIFIC SESSION I Chairs: P. Puri (Dublin, Ireland), A. Passalides (Athens, Greece)

09:00-09:10 EFFICACY AND SAFETY OF THE USE OF CONTRAST ENHANCED ULTRASOUND FOR THE CHARACTERIZATION OF ANORECTAL MALFORMATIONS (6p. + 4d. mins) S. Santiago-Martínez1, J. Jiménez- Gómez1, J.E. Betancourth- Alveranga1, M.B. San Vi- cente-Vela1, N. Álvarez-García1, P. Jiménez-Arribas1, J.R. Güizzo1, C. Esteva-Miró1, M. Gaspar- Pérez1, B. García-Núñez1, I. Romero-Novo2, V.A. Beltrán2 1 Pediatric Surgery Department, Hospital Parc Taulí, Sabadell- Barcelona (Spain) 2 Radiology Department, UDIAT. Hospital Parc Taulí, Sabadell- Barcelona (Spain)

09:10-09:20 AN INNOVATIVE WAY OF DIAGNOSING MINOR FORMS OF CONGENITAL ANORECTAL MALFORMATIONS USING HIGH RESOLUTION 3D MANOMETRY (6p. + 4d. mins) V.E.C. den Hollander, BSc1,2, S. Gerritsen1, T.H. van Dijk, MD2, M. Trzpis, PhD1, P.M.A. Broens, MD, PhD1,2 1Department of Surgery, Anorectal Physiology Laboratory, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands 2Department of Surgery, Division of Pediatric Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands

9:20-9:30 PHENOTYPIC DESCRIPTION OF UNCLASSIFIED CLOACAL ANOMALIES: EXPERIENCE OF THE GREAT ORMOND STREET HOSPITAL (GOSH) COHORT (6p. + 4d. mins) J. Lindert 1, S. Blackburn 1, A. Cherian 2, J. Curry 1 1Specialist Neonatal & Paediatric Surgery, Great Ormond Street Hospital, London, UK 2Paediatric Urology, Great Ormond Street Hospital, London, UK

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9:30-09:40 ARE END COLOSTOMIES ALWAYS CONTRA-INDICATED IN ANORECTAL MALFORMATIONS? (6p. + 4d. mins) A.P. Theron1, G. Brisighelli2, C. Westgarth-Taylor2, E. Mapunda1 1Department of Paediatric Surgery, Charlotte Maxeke Johannesburg Academic Hospital, Univer- sity of the Witwatersrand, Johannesburg, South Africa 2 Paediatric Colorectal and Pelvic Reconstruction Centre, Department of Paediatric Surgery, Chris Hani Baragwanath Academic Hospital, University of the Witwatersrand, Johannesburg, Johan- nesburg, South Africa

09:40-09:50 SINGLE-STAGE PROCEDURES FOR ANORECTAL MALFORMATIONS: A SYSTEMATIC REVIEW AND META-ANALYSIS (6p. + 4d. mins) L. Hartford1, G. Brisighelli2, T. Gabler3, C. Westgarth-Taylor4 1-4Pediatric Colorectal and Pelvic Reconstruction Centre, Department of Pediatric Surgery, Chris Hani Baragwanath Academic Hospital, University of the Witwatersrand, Johannesburg, South Africa

09:50-10:00 SPECIAL STAINS IN HIRSCHSPRUNG’S DISEASE: WHAT IS SO SPECIAL ABOUT THEM? (6p. + 4d. mins) I.E. Nwachukwu1, M. Al-Adnani1, A. Bhardwaj1, I. Yardley1, M. Upadhyaya1 1Evelina Children’s Hospital, London, United Kingdom

10:00-10:10 A SYSTEMATIC REVIEW ON RECENT TREND OF STAINING METHODS USED FOR HIRSCHSPRUNG DISEASE (6p. + 4d. mins) S. Sharma1, R. Nandan2 Department of Pediatric Surgery, 1All India Institute of Medical Sciences, New Delhi, 2Banaras Hindu University, New Delhi

10:10-10:20 FACILITATING THE HISTOPATHOLOGICAL DIAGNOSIS OF HIRSCHSPRUNG`S DISEASE VIA DIGITAL PATHOLOGY-BASED ANALYSIS OF ACHE STAINING (6p. + 4d. mins) Yannick Braun1,2, Florian Friedmacher1, Udo Rolle1, Patrick Harter2 1Department of Paediatric Surgery and Paediatric Urology, Goethe-University Frankfurt, Germany 2Department of Neuropathology, Goethe-University Frankfurt, Germany

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10:20-10:30 LONG-TERM OUTCOMES IN PATIENTS WITH EXTENDED AND SYNDROMIC HIRSCHSPRUNG’S DISEASE (6p. + 4d. mins) G. Riccipetitoni1, F. Vatta1, M. Gazzaneo1, A. Raffaele1, M. Bertozzi1 Pediatric Surgery Unit, Department of Mother and Child Fondazione IRCCS Policlinico San Matteo and University of Pavia, Italy

10:30-10:40 NEAR-TOTAL AND TOTAL INTESTINAL AGANGLIONOSIS: A CLINICAL CHALLENGE (6p. + 4d. mins) Gal Becker, Shlomi Cohen2,3, Hadar Moran-Lev2,3, Yoav Ben-Shahar1,4, Tal Koppelmann1, Rachel Aber, Igor Sukhotnik1,3 1Department of Pediatric Surgery 2Pediatric Gastroenterology Unit, Dana-Dwek Children’s Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel

10:40-10:45 SACRUM ULTRASONOGRAPHY: AN ACCURATE ALTERNATIVE TO RADIOGRAPHY FOR MEASURING SACRAL RATIO IN INFANTS (3p. + 2d. mins) Mehrdad Hosseinpour, Maryam Riahinezhad Isfahan University of Medical Sciences, Isfahan

10:45-10:50 EVALUATION OF MAGNETIC RESONANCE IMAGING FINDINGS FOLLOWING PSARP IN SEVERE INCONTINENT CHILDREN WITH HIGH IMPERFORATE ANUS (3p. + 2d. mins) Anus Mehrdad Hosseinpour1, Bahareh Ahmadi1, Zohreh Shahba2 1Isfahan University of Medical Sciences, Isfahan, Iran 2Azad University, Najaf abad branch, Isfahan, Iran

10:50-10:55 ENDO-RECTAL PULL-THROUGH IN NON-HIRSCHSPRUNGS DISEASE PATIENTS S. Sharma, N. Aggerwal, D.K. Gupta (3p. + 2d. mins) (New Delhi, India)

10:55-11:00 REVISITING FUNNEL ANUS: 2 CASES WITH SYSTEMATIC LITERATURE REVIEW (3p. + 2d. mins) S. Sharma Department of Pediatric Surgery, All India Institute of Medical Sciences, New Delhi

11:00-11:30 COFFEE BREAK

12 SCIENTIFIC PROGRAM Sunday, 29th August 2021

11:30-13:00 SCIENTIFIC SESSION II Chairs: M. Höllwarth (Graz, Austria), T. Wester (Stockholm, Sweden)

11:30-11:40 EXCISIONAL SUBMUCOSAL/MUCOSAL RECTAL BIOPSY USING THE ANORECTAL LINE UNDER GENERAL ANESTHESIA: A NEW ERA FOR DIAGNOSING HIRSCHSPRUNG’S DIS- EASE (6p. + 4d. mins) Masahiro Takeda1, Takanori Ochi1, Hiroyuki Koga1, Atsushi Arakawa2, Geoffrey J. Lane1, Atsuyuki Yamataka1 1Department of Pediatric General & Urogenital Surgery, Juntendo University School of Medicine, Tokyo, Japan 2Department of Human Pathology, Juntendo University School of Medicine, Tokyo, Japan

11:40-11:50 PROPHYLACTIC ANTIBIOTICS IN FULL-THICKNESS RECTAL BIOPSIES FOR HIRSCHSPRUNG’S DISEASE (6p. + 4d. mins) N.S. Schiellerup1, N. Bjørn1, A. Linneman2, S. Möller3, N. Qvist1, M.B. Ellebæk1 1Research Unit for Surgery, Odense University Hospital, Odense, Denmark; University of South- ern Denmark, Odense, Denmark 2Research Unit for Paediatrics, The Hans Christian Andersen Children Hospital, Odense Universi- ty Hospital, Odense, Denmark, University of Southern Denmark, Odense Denmark 3Open Patient data Explorative Network, Odense University Hospital, J. B. Winsloews Vej 4, 5000 Odense, Denmark

11:50-12:00 OPTIMIZING COST EFFECTIVENESS OF RECTAL SUCTION BIOPSIES FOR THE DIAGNO- SIS OF HIRSCHSPRUNG’S DISEASE IN LOW RESOURCE ENVIRONMENT (6p. + 4d. mins) G. Brisighelli, L. Hartford, M. Andreetta, N. Schoenfeldt, C. Bebington, J. Loveland, C. Westgarth-Taylor Paediatric Colorectal and Pelvic Reconstruction Centre, Department of Paediatric Surgery, Chris Hani Baragwanath Academic Hospital, University of the Witwatersrand, Johannesburg, South Africa

12:00-12:10 MULTIDISCIPLINARY MANAGEMENT OF TOTAL COLONIC AGANGLIONOSIS: 20-YEAR SINGLE INSTITUTIONAL EXPERIENCE (6p. + 4d. mins) K. Bhandarkar, S. Loukogeorgiakis, J. Davidson, S. Giuliani, K. Cross, P. DeCoppi, S. Black- burn, J. Curry Department of Paediatric surgery, Great Ormond Street Hospital for children, Great Ormond Street, London UK

13 SCIENTIFIC PROGRAM Sunday, 29th August 2021

12:10-12:20 PATIENT-REPORTED FUNCTIONAL OUTCOMES AFTER SURGERY FOR TOTAL COLONIC AND LONG-SEGMENT HIRSCHSPRUNG’S DISEASE IN COMPARISON TO RECTOSIGMOID SEGMENT: LESSONS LEARNED FROM PATIENTS (6p. + 4d. mins) S.J. Verkuijl,1,2 R.J. Meinds,2,3 A.F.W. van der Steeg,4 W.G. van Gemert,5 I. de Blaauw,6 M.J. Witvliet,7 C.E.J. Sloots,8 E. van Heurn,9 K.M. Vermeulen,10 M. Trzpis,2 P.M.A. Broens,1,2 1Department of Surgery, Division of Pediatric Surgery, University of Groningen, University Medi- cal Center Groningen, Groningen, the Netherlands 2Department of Surgery, Anorectal Physiology Laboratory, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands 3Department of Gastroenterology and Hepatology, Medisch Spectrum Twente, Enschede, the Netherlands 4Department of Pediatric Surgery, Princess Maxima Center for Pediatric Oncology, Utrecht, The Netherlands 5Department of Pediatric Surgery, University Medical Centre Maastricht, University of Maas- tricht, Maastricht, the Netherlands 6Department of Surgery, Division of Pediatric Surgery, Radboudumc–Amalia Children’s Hospital, Nijmegen, the Netherlands 7Department of Pediatric Surgery, Wilhelmina Children’s Hospital, University Medical Centre Utrecht, Utrecht, the Netherlands 8Department of Pediatric Surgery, Erasmus Medical Centre, Sophia Children’s Hospital, Rotter- dam, the Netherlands 9Department of Pediatric Surgery, Emma Children’s Hospital, Academic Medical Centre and VU University Medical Centre, Amsterdam, the Netherlands 10Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands

12:20-12:30 SPECTRUM OF CLINICAL PRESENTATION AFTER TRANSITION ZONE PULL- THROUGH IN HIRSCHSPRUNG’S DISEASE: A SINGLE INSTITUTIONAL 20- YEAR EXPERIENCE (6p. + 4d. mins) K. Bhandarkar, S. Loukogeorgias, J. Davidson, S. Giuliani, K. Cross, P. DeCoppi, S. Blackburn, J. Curry Department of Paediatric surgery, Great Ormond Street Hospital for children, Great Ormond Street, London UK

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12:30-12:40 FAMILIAL EXPERIENCE WITH HIRSCHSPRUNG’S DISEASE IMPROVES THE PATIENT’S ABILITY TO COPE (6p. + 4d. mins) S.J. Verkuijl,1,2 R.J. Meinds,2,3 A.F.W. van der Steeg,4 C.E.J. Sloots,5 E. van Heurn,6 I. de Blaauw,7 W.G. van Gemert,8 M.J. Witvliet,9 K.M. Vermeulen,10 M. Trzpis,2 P.M.A. Broens1,2 1Department of Surgery, Division of Pediatric Surgery, University of Groningen, University Medi- cal Center Groningen, Groningen, the Netherlands 2Department of Surgery, Anorectal Physiology Laboratory, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands 3Department of Gastroenterology and Hepatology, Medisch Spectrum Twente, Enschede, the Netherlands 4Department of Pediatric Surgery, Princess Maxima Center for Pediatric Oncology, Utrecht, The Netherlands 5Department of Pediatric Surgery, Erasmus Medical Centre, Sophia Children’s Hospital, Rotter- dam, the Netherlands 6Department of Pediatric Surgery, Emma Children’s Hospital, Academic Medical Centre and VU University Medical Centre, Amsterdam, the Netherlands 7Department of Surgery, Division of Pediatric Surgery, Radboudumc–Amalia Children’s Hospital, Nijmegen, the Netherlands 8Department of Pediatric Surgery, University Medical Centre Maastricht, University of Maas- tricht, Maastricht, the Netherlands 9Department of Pediatric Surgery, Wilhelmina Children’s Hospital, University Medical Centre Utrecht, Utrecht, the Netherlands 10Department of Epidemiology, University of Groningen, University Medical Center Gronin- gen, Groningen, the Netherlands

12:40-12:50 ROBOTIC SOAVE PULL-THROUGH PROCEDURE FOR HIRSCHSPRUNG’S DISEASE IN CHILDREN UNDER 12-MONTHS: LONG-TERM OUTCOMES (6p. + 4d. mins) C. Delgado-Miguel1,2, J.I. Camps1 1Department of Pediatric Surgery, Palmetto Health Children’s Hospital, Columbia, South Caroli- na, USA 2Department of Pediatric Surgery, La Paz Children´s Hospital, Madrid, Spain

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12:50-13:00 M. HIRSCHSPRUNG AND SEX: IS THERE A DIFFERENCE? (6p. + 4d. mins) A. Schmedding1, M. Hutter1, S. Gfroerer2, U. Rolle1 1Department of Pediatric Surgery and Pediatric Urology, University Hospital, Goethe University Frankfurt, Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany 2Department of Pediatric Surgery, Helios-Klinik Berlin-Buch. Schwanebecker Chaussee 50, D-13125 Berlin, Germany

13:00-14:00 LUNCH

14:00-16:00 SCIENTIFIC SESSION III Chairs: R. Rintala (Helsinki, Finland) G. Riccipetitoni (Pavia, Italy)

14:00-14:10 PRESENCE OF FECAL CONTINENCE REFLEXES AS A NEW PREDICTOR FOR FECAL CON- TINENCE IN PATIENTS WITH ANORECTAL MALFORMATIONS (6p. + 4d. mins) V.E.C. den Hollander*, BSc1,2, J.E. Jonker*, MD, PhD1,2, M. Trzpis, PhD1, P.M.A. Broens, MD, PhD1,2 *The contribution of these two authors was equal 1Department of Surgery, Anorectal Physiology Laboratory, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands 2Department of Surgery, Division of Pediatric Surgery, University of Groningen, University Medi- cal Center Groningen, Groningen, the Netherlands

14:10-14:20 UROLOGICAL IMPACT OF EPIDIDYMO-ORCHITIS IN ANORECTAL MALFORMATIONS: AN ARM-NET CONSORTIUM STUDY (6p. + 4d. mins) A. Morandi1, M. Fanjul2, B.D. Iacobelli3, I. Samuk4, D. Aminoff5, P. Midrio6, I. de Blaauw7, E. Schmiedeke8, A. Pini Prato9, W. Feitz10, H.J.J. van der Steeg7, D.G. Minoli11, C.E.J. Sloots12, F. Fascetti-Leon13, I. Makedonsky14, A. Garcia15, P. Stenström16 1Pediatric Surgery Department, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Poli- clinico, Milano, Italy, [email protected] 2Pediatric Surgery Department, Hospital Gregorio Marañón, Madrid, Spain 3Medical and Surgical Neonatology Department, Newborn Surgery Unit, Bambino Gesù Chil- dren’s Hospital-Research Institute, Rome, Italy 4Pediatric and Adolescent Surgery Department, Schneider Children’s Medical Center, Petah Tikva, affiliated with Sackler Faculty of Medicine, Tel Aviv University, Israel 5AIMAR-Italian Patients’ and Parents’ Organization for Anorectal Malformation, Rome,Italy 6Pediatric Surgery Unit, Cà Foncello Hospital, Treviso, Italy 7Pediatric Surgery- Surgery Department, Radboudumc Amalia Children’s Hospital, Nijmegen, The Netherlands 16 SCIENTIFIC PROGRAM Sunday, 29th August 2021

8Clinic for Paediatric Surgery and Paediatric Urology, Klinikum Bremen Mitte, Bremen, Germany 9Pediatric Surgery Unit, The Children Hospital, Azienda Ospedaliera SS Antonio e Biagio e Cesare Arrigo, Alessandria, Italy 10Urology Department, Division of Paediatric Urology, Radboudumc Amalia Children’s Hospital, Nijmegen, The Netherlands 11Pediatric Urology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano, Italy 12Pediatric Surgery Department, Erasmus MC-Sophia Children’s Hospital, Rotterdam, The Neth- erlands 13Pediatric Surgery Unit, Women’s and Children’s Health Department, University of Padua, Pad- ua, Italy 14Pediatric Surgery Department, Rudnev Dnipropetrovsk Specialized Clinical Medical Center for Mother and Child Health, Dnipro, Ukraine 15Pediatric Surgery Unit,University Hospital 12 de Octubre, Madrid, Spain 16Pediatric Surgery Department, Lund University, Skane University Hospital, Lund, Sweden

14:20-14:30 A RISK FACTOR ANALYSIS OF IRREVERSIBLE RENAL DYSFUNCTION BASED ON FETAL ULTRASONOGRAPHIC FINDINGS IN PATIENTS WITH PERSISTENT CLOACA: THE RE- SULTS FROM A NATIONWIDE SURVEY IN JAPAN (6p. + 4d. mins) Toshio Harumatsu1, Koshiro Sugita1, Satoshi Ieiri1, 2, Masayuki Kubota2 1Department of Pediatric Surgery, Research Field in Medicine and Health Sciences, Medical and Dental Sciences Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan 2Representative of Research Team for the Establishment of Treatment Guidelines for Persistent Cloaca, Cloacal Exstrophy and Mayer‑Rokitansky‑Küster‑Häuser Syndrome for the Proper Transitional Care of the Patients, The Research Project for Rare and Intractable Diseases of the Ministry of Health, Labour and Welfare (MHLW), Tokyo, Japan

14:30-14:40 CONTINENCE, CLINICAL AND PSYCHOSOCIAL OUTCOME OF CHILDREN WITH ANOREC- TAL MALFORMATION (6p. + 4d. mins) N. Becker, M. Kapapa, A. Serra General and visceral Surgery, Section of Pediatric Surgery, Ulm, Germany

14:40-14:50 PREVALENCE OF ANORECTAL MALFORMATIONS AND ASSOCIATED ANOMALIES IN PATIENTS WITH TOWNES-BROCKS SYNDROME: A SYSTEMATIC REVIEW (6p. + 4d. mins) C. Eichorn, U. Rolle, F. Friedmacher Department of Paediatric Surgery and Paediatric Urology, Goethe-University Frankfurt, Germany

17 SCIENTIFIC PROGRAM Sunday, 29th August 2021

14:50-15:00 CONTINENCE MANAGEMENT IN CHILDREN WITH SEVERE CAUDAL REGRESSION SYN- DROME: ROLE OF MULTIDISCIPLINARY TEAM AND LONG- TERM FOLLOW-UP (6p. + 4d. mins) G. Totonelli1 , G. Esposito2, B. D,Iacobelli3, D. Longo4, T. Caldaro5, F. Bevilacqua3, G. Blasetti6, P. Bagolan3, G. Mosiello1 1Division of Neuro-Urology , Bambino Gesù Pediatric Hospital, Rome Italy 2Division of Neuro-Surgery , Bambino Gesù Pediatric Hospital, Rome Italy 3Division of Newborn Surgery, Bambino Gesù Pediatric Hospital, Rome Italy 4Department of Radiology, Bambino Gesù Pediatric Hospital, Rome Italy 5Division of Gasto-intestinal Surgery, Bambino Gesù Pediatric Hospital, Rome Italy 6Department of Neuro-Rehabilitation, Bambino Gesù Pediatric Hospital, Rome, Italy

15:00-15:10 CLINICAL FEATURES OF MAYER-ROKITANSKY-KUSTER-HAUSER SYNDROME DIAGNOSED IN CHILDHOOD: RESULTS FROM A NATIONWIDE SURVEY IN JAPAN (6p. + 4d. mins) Keisuke Yano1, Toshio Harumatsu1, Koshiro Sugita1, Satoshi Ieiri1,2, Masayuki Kubota3 1Department of Pediatric Surgery, Research Field in Medicine and Health Sciences, Medical and Dental Sciences Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan 2Research Team for the Establishment of Treatment Guidelines for Persistent Cloaca, Cloacal Exstrophy and Mayer‑Rokitansky‑Küster‑Häuser Syndrome for the Proper Transitional Care of the Patients, The Research Project for Rare and Intractable Diseases of the Ministry of Health, Labour and Welfare (MHLW), Tokyo, Japan 3Representative of Research Team for the Establishment of Treatment Guidelines for Persistent Cloaca, Cloacal Exstrophy and Mayer‑Rokitansky‑Küster‑Häuser Syndrome for the Proper Transitional Care of the Patients, The Research Project for Rare and Intractable Diseases of the Ministry of Health, Labour and Welfare (MHLW), Tokyo, Japan

15:10-15:15 PRIMARY TRANSANAL PULLTHROUGH IN A SETUP WITHOUT FROZEN SECTION (3p. + 2d. mins) S. Negash, MD1*, H. Getachew, MD1, T. N. Mammo MD1, D. Tamirat, MD2 1Division of Pediatric Surgery, Addis Ababa University, Ethiopia 2Department of Pathology, Addis Ababa University, Ethiopia

15:15-15:20 MODIFIED DUHAMEL OPERATION TO ELIMINATE THE BLIND RECTAL POUCH (3p. + 2d. mins) F. Mehmetoğlu1, G. Aydin2 1Department of Pediatric Surgery, Dortcelik Children’s Hospital, Bursa, Turkey 2Dicle University Faculty of Medicine Pediatric Surgery Clinic, Diyarbakır, Turkey

18 SCIENTIFIC PROGRAM Sunday, 29th August 2021

15:20-15:25 POSTOPERATIVE COMPLICATIONS OF HIRSCHSPRUNG DISEASE OTHER THAN ENTERO- COLITIS (3p. + 2d. mins) E. Şehoviç Keçik1, N. Sever2, M. Kaba2, M. Demir2, A. Yıldız2, Ş. Yeşilkaya2, ÇA. Karadağ2 1Bezmialem Vakıf University, Dragos Hospital, Department of Pediatirc Surgery 2University of Health Sciences, Sisli Etfal Training And Research Hospital, Department of Pediat- ric Surgery

15:25-15:30 COMPARISON OF POST-OPERATIVE SUCCESS OF HIRSCHSPRUNG DISEASE CORREC- TIVE SURGERY WITH ANORECTAL MANOMETRIC FINDINGS AND QUALITY OF LIFE SUR- VEY (3p. + 2d. mins) M.D. Oney1, M.O. Oztan2, G. Koyluoglu3 1Tepecik Education and Research Hospital Pediatric Surgery Clinic Yenisehir, Konak, Izmir, Turkey 2Izmir Katip Celebi University, School of Medicine Department of Pediatric Surgery Tepecik Edu- cation and Research Hospital Pediatric Surgery Clinic Yenisehir, Konak, Izmir, Turkey 3Izmir Katip Celebi University, School of Medicine Department of Pediatric Surgery Tepecik Education and Research Hospital Pediatric Surgery Clinic Yenisehir, Konak, Izmir, Turkey

15:30-15:35 A TEN-YEAR EXPERIENCE OF TREATING HIRSCHSPRUNG’S DISEASE AT CHILDREN’S HOSPITAL LAHORE (3p. + 2d. mins) Fatima Majeed1, Muhammad Saleem1, Jamaal Butt1, Imran Hashim1, Mehboob Ahmad Bhutta1, Nosheen Ilyas1, Moeezah Mohammad1, Ayesha Manzoor1 1The Children’s Hospital & The Institute of Child Health, Lahore, Pakistan

15:35-15:40 REDO PULL-THROUGH SURGERY FOR HIRSCHSPRUNG’S DISEASE IN CHILDREN (3p. + 2d. mins) Muhammad Saleem, Javaid Iqbal, Imran Hashim, Jamaal Butt, Uzma Ather Department of Pediatric Surgery The Children’s Hospital & ICH, Lahore, Pakistan

15:40-15:45 CHANGES IN THE INTERNAL SPHINCTER OF THE ANUS IN PATIENTS WITH DIFFERENT CLINICAL MANIFESTATIONS OF ANAL ACHALASIA: CONSTIPATION, ANAL FISSURES, HEMORRHOIDS (3p. + 2d. mins) N. Kolesnikova, I. Komissarov, PH. Kovalev, G. Salvador Saint-Petersburg State Pediatric Medical University Saint-Petersburg Russia

19 SCIENTIFIC PROGRAM Sunday, 29th August 2021

15:45-15:50 TRANSANAL RESECTION OF THE MEGARECTUM IN PATIENTS AFTER CORRECTION OF ANORECTAL ATRESIA AND ANAL ACHALASIA (3p. + 2d. mins) N. Kolesnikova, I. Komissarov, PH. Kovalev, G. Salvador Saint-Petersburg State Pediatric Medical University Saint-Petersburg Russia 15:50-16:00 Discussion

16:00-16:30 COFFEE BREAK

16:30-18:00 SCIENTIFIC SESSION IV Chairs: U. Rolle (Frankfurt, Germany), S. Shehata (Alexandria, Egypt)

INVITED GUEST LECTURE I 16:30-17:00 COLORECTAL PEDIATRIC SURGERY. A NEW SUB SPECIALTY? (20p. + 10d. mins)* A. Peña (Aurora, USA)

17:00-17:10 THE IMPORTANCE OF A DEDICATED COLORECTAL TEAM PARTICIPATION IN THE MAN- AGEMENT OF SPINA BIFIDA AND SPINAL CORD INJURY PATIENTS (6p. + 4d. mins) A. Bischoff1, J. Hall1, H. Simmons1, A. Krause1, J. Ketzer1, J. Schletker1, L. Judd-Glossy1, S. Trainor, P. Wilson, A. Pena1, L. De La Torre1 1International Center for Colorectal and Urogenital Care, Children’s Hospital Colorado 2Department of Pediatric Rehabilitation, Children’s Hospital Colorado

17:10-17:20 VISUALIZATION OF THE ANAL DIMPLE BY FETAL MRI: IS IT FEASIBLE? (6p. + 4d. mins) M.L. Meyers1, D.M. Mirsky1, K.A. Santos-Jasso2, J. Ketzer3, J. Hall3, A. Peña3, L. de La Torre3, A. Bischoff3 1Department of Radiology, Children’s Hospital Colorado, Aurora CO 2Department of Pediatric Surgery, Instituto Nacional de Pediatria, Mexico D.F. 3International Center for Colorectal and Urogenital Care, Children’s Hospital Colorado, Aurora CO

17:20-17:30 THE USE OF SOCIAL MEDIA AMONG THE PEDIATRIC COLORECTAL COMMUNITY (6p. + 4d. mins) M. Reppucci1, L. de La Torre1, A. Peña1, K. Pickett2, J. Ketzer1, A. Bischoff1 1International Center for Colorectal and Urogenital Care, Children’s Hospital Colorado, Aurora, Colorado, USA 2Children’s Hospital Center for Research in Outcomes for Children’s Surgery, Children’s Hospital Colorado, Aurora, Colorado, USA 20 SCIENTIFIC PROGRAM Sunday, 29th August 2021

17:30-17:40 CONSIDERING THE VALUE OF ONLINE SUPPORT GROUPS FOR COLORECTAL CONDI- TIONS: PERSPECTIVES FROM CAREGIVERS AND ADULT PATIENTS (6p. + 4d. mins) L. Judd-Glossy, PhD1,2,3, M. Ariefdjohan, PhD, MPH1,2, J. Ketzer, BS3, K. Matkins, LCSW3, A. Pena, MD3, L. De La Torre, MD3, A. Bischoff, MD3 1Department of Psychiatry, University of Colorado Anschutz Medical Campus, Aurora, CO, USA 2Pediatric Mental Health Institute, Children’s Hospital Colorado, Aurora, CO, USA 3International Center for Colorectal and Urogenital Care, Children’s Hospital Colorado, Aurora, CO, USA

17:40-17:50 IS THE APPENDIX A GOOD ORGAN TO DIAGNOSE TOTAL COLONIC AGANGLIONOSIS? (6p. + 4d. mins) M. Reppucci1, M. Arnold2, M. Lovell2, K. Santos-Jasso3, J. Ketzer1, A. Pena1, L.de La Torre1, A. Bischoff1 1International Center for Colorectal and Urogenital Care, Children’s Hospital Colorado, Aurora, Colorado, USA 2Department of Pathology, Children’s Hospital Colorado, Aurora, Colorado, USA 3Department of Pediatric Surgery, Instituto Nacional de Pediatria, Ciudad de México, Mexi- co D.F.

17:50-18:00 LONGITUDINAL PROFILE OF GASTROINTESTINAL AND GENITOURINARY FUNCTION IN HIRSCHSPRUNG SURVIVORS (6p. + 4d. mins) M. Cowap1, G. Derraugh2,3, R. Balshaw4, S.A. Lum Min2,3, R. Keijzer2,3 1Max Rady College of Medicine, University of Manitoba, Winnipeg, Canada 2Department of Surgery, Division of Pediatric Surgery, University of Manitoba, Winnipeg, Canada 3Children’s Hospital Research Institute of Manitoba, Winnipeg, Canada 4Centre for Healthcare Innovation, University of Manitoba, Winnipeg, Canada

20:30 SOCIAL DINNER

21 SCIENTIFIC PROGRAM Monday, 30th August 2021

09:00-11:00 SCIENTIFIC SESSION V Chairs: J.-M. Guys (Marseille, France) F. Friedmacher (Frankfurt, Germany)

09:00-09:30 INVITED GUEST LECTURE II TRANSLATING EXPERIMENTAL DISCOVERIES TO A CLINICAL TRIAL: REMOTE ISCHEMIC CONDITIONING IN NECROTIZING ENTEROCOLITIS (20p. + 10d. mins) A. Pierro (Toronto, Canada)

09:30-09:40 FOLLOW-UP OF CHILDREN WITH CONGENITAL COLORECTAL MALFORMATION DURING THE SARS-CoV-2 PANDEMIC: QUALITATIVE ASSESSMENT OF THE CARE PROVIDED DURING LOCKDOWN PERIOD: A PILOT STUDY (6p. + 4d. mins) E. Stathopoulos1, C. Skerritt 1, G. Fitzpatrick1, E. Hooker1, A. Lander1, O. Gee1, I, Jester1 1Department of Paediatric Surgery, Birmingham Children’s Hospital, Steelhouse Lane, Birming- ham, United Kingdom

09:40-09:50 LAPAROSCOPIC-ASSISTED SWENSON PULL-THROUGH FOR HIRSCHSPRUNG’S DISEASE (6p. + 4d. mins) S. Shehata Alexandria, Egypt 09:50-10:00 SURGICAL TECHNIQUE FOR SURGICAL CORRECTION OF LONG SEGMENT HIRSCHSPRUNG DISEASE: WHY DON´T WE LOOK AT VISCERAL SURGEONS? (6p. + 4d. mins) K. Reinshagen1, M. Böttcher1, J. Böttcher2 1Department of Pediatric Surgery 2Department of Child and Adolescent Psychiatry University Hospital Hamburg Eppendorf, Germany

10:00-10:10 THE IMPACT OF CONGENITAL CENTRAL HYPOVENTILATION SYNDROME ON HIRSCHSPRUNG DISEASE CLINICAL MANIFESTATION AND OUTCOME: SINGLE CENTRE EXPERIENCE (6p. + 4d. mins) C. Iacusso, BD. Iacobelli, A. Conforti, L. Valfrè, P. Bagolan, F. Fusaro Division of Neonatal Surgery, Department of Medical and Surgical Neonatology, ‘Bambino Gesù Children’s Hospital, Rome, Italy

22 SCIENTIFIC PROGRAM Monday, 30th August 2021

10:10-10:20 PREVALENCE OF HIRSCHSPRUNG’S-ASSOCIATED ENTEROCOLITIS IN PATIENTS WITH HIRSCHSPRUNG’S DISEASE (6p. + 4d. mins) J. Hagens1, C. Tomuschat1 1Department of Paediatric Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany

10:20-10:30 POINT-OF-CARE ULTRASOUND FOR INITIATION AND TREATMENT CONTROL OF TRANSANAL IRRIGATION IN PEDIATRIC PATIENTS (6p. + 4d. mins) Kerstin Saalabian, Florian Friedmacher, Andrea Schmedding, Udo Rolle Department of Paediatric Surgery and Paediatric Urology, Goethe-University Frankfurt, Germany

10:30-10:40 FACTORS WHICH CONTRIBUTE TO THE DECREASE OF ANAL BASAL PRESSURE AFTER BOTULINUM TOXIN INJECTIONS IN PEDIATRIC PATIENTS WITH CHRONIC CONSTIPA- TION (6p. + 4d. mins) G. Sun1, M. Trzpis1, P.M.A. Broens1,2 1Department of Surgery, Anorectal Physiology Laboratory, University of Groningen, University Medical Center Groningen, 1 Hanzeplein, PO Box 30 001, 9700 RB Groningen, the Netherlands 2Department of Surgery, Division of Pediatric Surgery, University of Groningen, University Medi- cal Center Groningen, Hanzeplein 1, PO Box 30 001, 9700 RB Groningen, the Netherlands

10:40-10:45 USABILITY OF SUPERFICIAL PROBE FOR BOTOX INJECTION UNDER ULTRASOUND GUIDE IN CHILDREN WITH FUNCTIONAL CONSTIPATION (3p. + 2d. mins) Anus Mehrdad Hosseinpour1, Bahareh Ahmadi1, Zohreh Shahba2 1Isfahan University of Medical Sciences, Isfahan, Iran 2Azad University,Najaf abad branch, Isfahan, Iran

10:45-10:50 EFFECTS OF BOTULINUM TOXIN ON THE RAT COLON (3p. + 2d. mins) E. S. Pimenova 1,2, G.A. Korolev 1, O.E. Romanova 1, D.A. Morozov 1,2 1Sechenov University, Moscow, Russia 2Speransky Children’s Hospital, Moscow, Russia

10:50-10:55 EVALUATION OF BOWEL MANAGEMENT PROGRAM ON QUALITY OF LIFE IN CHILDREN WITH FECAL INCONTINENCE (3p. + 2d. mins) Mehrdad Hosseinpour1, Bahareh Ahmadi1, Zohreh Shahba2 1Isfahan University of Medical Sciences, Isfahan, Iran 2Azad University, Najaf abad branch, Isfahan, Iran

23 SCIENTIFIC PROGRAM Monday, 30th August 2021

10:55-11:00 TRANSSECTION OF TIGHT FILUM TERMINALE OUTSIDE THE SPINAL CANAL IN THE TREAT- MENT OF CONSTIPATION AND FECAL INCONTINENCE IN CHILDREN (3p. + 2d. mins) N. Kolesnikova, I. Komissarov, PH. Kovalev, G. Salvador Saint-Petersburg State Pediatric Medical University Saint-Petersburg Russia

11:00-11:30 COFFEE BREAK

11:30-13:00 SCIENTIFIC SESSION VI Chairs: A. Pierro (Toronto, Canada), I. Sukhotnik (Tel Aviv, Israel)

11:30-11:40 SELF-EXPANDING INTESTINAL EXPANSION SLEEVES (IES) FOR SHORT GUT SYNDROME (6p. + 4d. mins) J.S. Alexander2, D. Sorrells1, S. Clayton1, G. Solitro3, L. White2, S. Villalba2, E. Winder1, M. Boudreaux1, P. Veerareddy2, E. Dong2 1Dept. of Surgery, LSU Health Sciences Center, Shreveport, LA, 71106, USA 2Dept. of Molecular and Cellular Physiology, LSU Health Sciences Center, Shreveport, LA, 71106, USA 3Biomechanics Laboratory, LSU Health Sciences Center, Shreveport, LA, 71106, USA

11:40-11:50 PRELIMINARY EXPERIENCE IN ROBOTIC ILEAL POUCH-ANAL ANASTOMOSIS IN CHIL- DREN (6p. + 4d. mins) C. Romeo1, S. Arena1, D. Di Fabrizio1, V. Di Pasquale2, P. Antonuccio1, P. Impellizzeri1, C. Romano2, G. Mattioli3 1Department of Human Pathology of Adult and Childhood “Gaetano Barresi”, Unit of Paediatric Surgery, University of Messina, Messina, Italy 2Department of Human Pathology of Adult and Childhood “Gaetano Barresi”, Paediatric Gastro- enterology and Cystic Fibrosis Unit, University of Messina, Messina, Italy 3Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), Unit of Paediatric Surgery, University of Genoa, Genoa, Italy

11:50-12:00 USE OF HETEROLOGOUS MESENCHYMAL STEM CELLS IN TREATMENT OF PERINEAL FISTULIZING CROHN DISEASE IN ADOLECENCE: PRELIMINARY EXPERIENCE (6 + 4 mins) A. Raffaele1, F. Vatta1, M. Gazzaneo1, M. Brunero1, S. Caimmi2, M. Lenti3, M.A. Avanzini4, G. Riccipetitoni1 1Pediatric Surgery Unit, Department of Mother and Child 2Pediatrics Unit, Department of Mother and Child 3Gastroenterology Unit, Department of Medical Science and Infectious disease 4Biology Lab, Department of Mother and Child Fondazione IRCCS Policlinico San Matteo and University of Pavia 24 SCIENTIFIC PROGRAM Monday, 30th August 2021

12:00-12:10 RETROSPECTIVE SINGLE-CENTRE ANALYSIS OF SHORT-TERM OUTCOMES AFTER ILE- OCECAL RESECTION IN CHILDREN WITH CROHNS DISEASE (6p. + 4d. mins) E.J. Weigl1, T. Schwerd2, E.Lurz2, J. Hubertus1 1 Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, Ludwig Maximilian Uni- versity of Munich, Munich, Germany 2Department of Pediatric Gastroenterology, Dr. von Hauner Children’s Hospital, Ludwig Maximil- ian University of Munich, Munich, Germany

12:10-12:20 LIGATION OF INTERSPHINCTERIC FISTULA TRACT IN FISTULA-IN-ANO IN PEDIATRIC POPULATION, WHY NOT? (6p. + 4d. mins) I.I.R. Braga, R. Ricardo, M. Recaman, J. Correia-Pinto, A. Osorio Braga, Portugal

12:20-12:30 TREATMENT OF INFANTS WITH RECURRENCIES OF PERIANAL ABSCESSES (6p. + 4d. mins) G. Khanes1, V. Prytula2, I. Maksakova1, I. Rybalchenko1 1National Specialized Pediatric Hospital OhMatDyt, Neonatal Surgery Department, Kyiv, Ukraine 2O.Bohomolets National Medical University, Pediatric Surgery Department, Kyiv, Ukraine

12:30-12:40 COMPARISON OF COMBINATION OF SCLEROTHERAPY AND TIERSCH’S PROCEDURE WITH PERINEAL MESH RECTOPEXY FOR RECTAL PROLAPSE IN CHILDREN (6p. + 4d. mins) Mehrdad Hosseinpour, Hossein Ebrahimy Isfahan University of Medical Sciences, Isfahan, Iran

12:40-12:50 COLONIC CARCINOMA IN CHILDREN: A GROWING THREAT (6p. + 4d. mins) M.A. Mohammad Saleem1, Anum Asif1, Jamaal Butt1, Imran Hashim1, Asif Iqbal1, Mehboob Ahmad Bhutta1, Alia Ahmad1 1The Children’s Hospital & The Institute of Child Health, Lahore, Pakistan

12:50-13:00 Discussion

13:00-14:00 LUNCH

25 SCIENTIFIC PROGRAM Monday, 30th August 2021

14:00-15:00 SCIENTIFIC SESSION VII Chairs: Z. Zachariou (Nicosia, Cyprus) P. M. A. Broens (Groningen, the Netherlands)

14:00-14:05 EVALUATION OF POST OPERATIVE OUTCOMES OF DIFFERENT SURGICAL TECHNIQUES USED IN CLOACAL PATIENTS WITH SHORT URETHRAL LENGTH > 1.5 CM BY USING (3p. + 2d. mins) M. Abdelmalak Abokandil1, S. Waheeb1, G. Eltagy2, A. Khairi1 1Department of Pediatric Surgery, Alexandria University Children’s Hospital, Alexandria, Egypt 2Department of Pediatric Surgery, Cairo University, Cairo, Egypt

14:05-14:10 AUDIT OF SURGERIES DONE IN PATIENTS OF ANORECTAL MALFORMATION PRESENT- ED IN NEONATAL PERIOD (3p. + 2d. mins) Jamaal Butt1, Muhammad Saleem1, Asim Raza1, Imran Hashim1, Asad Khan1 1The Children’s Hospital & Institute of Child Health, Lahore, Pakistan

14:10-14:15 UROLOGICAL COMPLICATIONS OF SURGERY FOR ANO RECTAL MALFORMATIONS IN BOYS (3p. + 2d. mins) S. K. Aggarwal, G. Singh, G. Singh Department of Paediatric Surgery, Sir Ganga Ram Hospital, New Delhi, India.

14:15-14:20 GENITO URINARY AND HINDGUT DUPLICATIONS IN ASSOCIATION WITH ANO RECTAL MALFORMATIONS: 15 YEAR EXPERIENCE OF SUCCESSFUL MANAGEMENT (3p. + 2d. mins) S. K. Aggarwal, G. Singh, G. Singh Department of Paediatric Surgery, Sir Ganga Ram Hospital, New Delhi, India

14:20-14:25 ANALYSIS OF TREATMENT RESULTS IN ANORECTAL MALFORMATION (3p. + 2d. mins) Yu.V. Shugina1,2, O.G. Mokrushina1,2, V.S. Shumikhin1,2, R.V. Khаlafov1,2 1Filatov Children’s Hospital, Moscow, Russia 2Pirogov Russian National Research Medical University, Moscow, Russia Yuliya Shugina, PhD, MD, Newborn Surgery Department, Filatov Children’s Hospital, Moscow, Russia

26 SCIENTIFIC PROGRAM Monday, 30th August 2021

14:25-14:30 USING ANAL SPHINCTEROMETRY IN THE COMPLEX REHABILITATION OF PATIENTS WITH ANORECTAL MALFORMATIONS (3p. + 2d. mins) Yu.V. Shugina1,2, O.G. Mokrushina1,2 1Filatov Children’s Hospital, Moscow, Russia 2Pirogov Russian National Research Medical University, Moscow, Russia Yuliya Shugina, PhD, MD, Newborn Surgery Department, Filatov Children’s Hospital, Moscow, Russia

14:30-14:35 POSTOPERATIVE ISCHEMIA OF THE NEORECTUM AND ITS SIGNIFICANCE IN LONG- TERM OUTCOMES (3p. + 2d. mins) D.D. Morozov1, L.O. Severgina,2 O.L. Morozova3, T.D. Marchuk1, D.A. Morozov1 1Department of Pediatric Surgery, Sechenov First Moscow State Medical University, Moscow, Russia 2Department of Pathological Anatomy, Sechenov First Moscow State Medical University, Mos- cow, Russia 3Department of Pathophysiology, Sechenov First Moscow State Medical University, Moscow, Russia

14:35-14:40 HIGH ANORECTAL MALFORMATION WITH ATRESIA OF THE ASCENDING COLON: AN UNUSUAL ASSOCIATION (3p. + 2d. mins) Tarek Kamel, Mostafa Kotb, Mohamed Okasha, Hayssam Rashwan, Ahmed Khairi Pediatric Surgery Department, Alexandria Faculty of Medicine, Alexandria, Egypt

14:40-14:45 ANORECTAL MALFORMATION NEGLECTED BY PARENTS: DELAYED PRESENTATION OF POSTERIOR CLOACA IN A MARRIED GIRL (3p. + 2d. mins) Dr Charu Tiwari, Dr Nilesh Nagdeve, Dr Rajendra Saoji Dr Charu Tiwari, Assistant Professor, Department of Paediatric Surgery, AIIMS, Raipur, Chhattis- garh, India, Ex- Assistant Professor, Department of Paediatric Surgery, GMC, Nagpur,Maharah- stra, India Dr Nilesh Nagdeve - Associate Professor, Department of Paediatric Surgery, GMC, Nagpur, Ma- harahstra, India Dr Rajendra Saoji – Professor and Head, Department of Paediatric Surgery, GMC, Nagpur, Maha- rahstra, India

27 SCIENTIFIC PROGRAM Monday, 30th August 2021

14:45-14:50 PROGNOSTIC SIGNIFICANCE OF RELATION OF URETHRAL ORIFICE TO ANAL SPHINC- TER IN APHALIA (3p. + 2d. mins) M.A. Ardelean1, G. Brandtner1, P. Gombos1, I. Orendi1, L. Bauer1, C. Gebauer1, R. Metzger1 Clinic of Pediatric Surgery, Paracelsus Medical University,Salzburg, Austria

14:50-14:55 COLORECTAL SCHISTOSOMIASIS CAUSING COMPLETE RECTAL PROLAPSE IN A CHILD: A CASE REPORT (3p. + 2d. mins) L.J.C. Anyanwu1,2, K. Bwala2, I.A. Ali2 1Paediatric Surgery Unit, Department Of Surgery, Bayero University Kano And Aminu Kano Teaching Hospital Kano, Nigeria 2paediatric Surgery Unit, Department Of Surgery, Abubakar Tafawa Balewa University Teaching Hospital Bauchi, Nigeria

14:55-15:00 CECAL PERFORATION IN A CHILD MIMICKING ACUTE PERFORATED APPENDICITIS: A CASE REPORT (3p. + 2d. mins) G. Kottakis, I. Ioannidou, T. Dionysis, Ar. Prapas, Sp. Kosteletos, M. Sklavos 1st Pediatric Surgery Department , “Pan. & Aglaia Kyriakou” Children’s Hospital , Athens, Greece

15:00-16:00 SCIENTIFIC SESSION VIII (INTERESTING CLINICAL CASES) Chairs: M. Lukac (Belgrade, Serbia), C. Romeo (Messina, Iraly)

15:00-15:10 IMAGE-GUIDED CONFIRMATION OF A PRECISION PULL-THROUGH PROCEDURE DUR- ING LAPAROSCOPICALLY ASSISTED ANORECTOPLASTY IN AN OPEN MRI OPERATING THEATER: FIRST APPLICATION IN AN INFANTILE CASE WITH ANORECTAL MALFORMA- TION (5p. + 5d. mins) S. Onishi1, C. Kedoin1, M. Murakami1, N. Higa2, A. Yoshida3, K. Onitsuka3, T. Moriyama3, K. Yoshimoto2, S. Ieiri1 1Department of Pediatric Surgery, Research Field in Medical and Health Sciences, Medical and Dental Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan 2Department of Neurosurgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan 3Department of Anesthesiology and Critical Care Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan

28 SCIENTIFIC PROGRAM Monday, 30th August 2021

15:10-15:20 OPERATIVE TECHNIQUES IN A BOY WITH CONGENITAL ANAL ATRESIA, GENITAL AND URINARY TRACT ANOMALIES (5p. + 5d. mins) Orthodoxos Achilleos, Ioannis Skondras, Adelais Tzortzopoulou, Zoe Lamprinou, Alexander Passalides 2nd Surgical Department, “P. & A. Kyriakou” Childrens’ Hospital, Athens, Greece

15:20-15:30 A RARE CASE OF RECTAL DUPLICATION PRESENTING AS POSTERIOR PERINEAL HERNIA (5p. + 5d. mins) S. Sharma, N. Aggerwal, D.K. Gupta New Delhi, India

15:30-15:40 SINGLE ECTOPIC URETER INSERTED INTO RECTOPROSTATIC FISTULA (5p. + 5d. mins) R. Satake1, H. Nakamura1, S. Yoshimoto1, T. Okunobo1, Y. Shigeta1, T. Doi1 1Kansai Medical University, Department of Pediatric Surgery, Osaka, Japan

15:40-15:50 SURGICAL ASPECT OF EXCEPTIONALLY RARE CASE OF CHRONIC INTESTINAL PSEU- DO-OBSTRUCTION ASSOCIATED WITH UNDERLYING ACTG2 VISCERAL MYOPATHY: CASE REPORT AND LITERATURE REVIEW (5p. + 5d. mins) S. Sindjic-Antunovic, I. Milovanovic, N. Popovac, R. Jankovic, M. Lukac, D. Vujovic Belgrade, Serbia

15:50-16:00 A CHALLENGING CASE OF RECTOPERINEAL FISTULA, WITH CONGENITAL POUCH COLON, PRESACRAL MASS AND ABNORMALLY LOCATED SPHINCTER COMPLEX (5p. + 5d. mins) T.K. Jayakumar1, Kirtikumar J Rathod1, Avinash Jadhav1, Arvind Sinha1, Poonam Elhence2 1Department of Pediatric Surgery, All India Institute of Medical Sciences, Jodhpur (India) 2Department of Pathology, All India Institute of Medical Sciences, Jodhpur (India)

16:00 CLOSING REMARKS

29 SPONSORS

The Organizing Committee acknowledges the following Sponsors for their precious support to the Meeting organization

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