Recurring Patterns of Inflammatory Sinonasal Disease Demonstrated on Screening Sinus CT
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MR Imaging of the Orbital Apex
J Korean Radiol Soc 2000;4 :26 9-0 6 1 6 MR Imaging of the Orbital Apex: An a to m y and Pat h o l o g y 1 Ho Kyu Lee, M.D., Chang Jin Kim, M.D.2, Hyosook Ahn, M.D.3, Ji Hoon Shin, M.D., Choong Gon Choi, M.D., Dae Chul Suh, M.D. The apex of the orbit is basically formed by the optic canal, the superior orbital fis- su r e , and their contents. Space-occupying lesions in this area can result in clinical d- eficits caused by compression of the optic nerve or extraocular muscles. Even vas c u l a r changes in the cavernous sinus can produce a direct mass effect and affect the orbit ap e x. When pathologic changes in this region is suspected, contrast-enhanced MR imaging with fat saturation is very useful. According to the anatomic regions from which the lesions arise, they can be classi- fied as belonging to one of five groups; lesions of the optic nerve-sheath complex, of the conal and intraconal spaces, of the extraconal space and bony orbit, of the cav- ernous sinus or diffuse. The characteristic MR findings of various orbital lesions will be described in this paper. Index words : Orbit, diseases Orbit, MR The apex of the orbit is a complex region which con- tains many nerves, vessels, soft tissues, and bony struc- Anatomy of the orbital apex tures such as the superior orbital fissure and the optic canal (1-3), and is likely to be involved in various dis- The orbital apex region consists of the optic nerve- eases (3). -
Gross Anatomy Assignment Name: Olorunfemi Peace Toluwalase Matric No: 17/Mhs01/257 Dept: Mbbs Course: Gross Anatomy of Head and Neck
GROSS ANATOMY ASSIGNMENT NAME: OLORUNFEMI PEACE TOLUWALASE MATRIC NO: 17/MHS01/257 DEPT: MBBS COURSE: GROSS ANATOMY OF HEAD AND NECK QUESTION 1 Write an essay on the carvernous sinus. The cavernous sinuses are one of several drainage pathways for the brain that sits in the middle. In addition to receiving venous drainage from the brain, it also receives tributaries from parts of the face. STRUCTURE ➢ The cavernous sinuses are 1 cm wide cavities that extend a distance of 2 cm from the most posterior aspect of the orbit to the petrous part of the temporal bone. ➢ They are bilaterally paired collections of venous plexuses that sit on either side of the sphenoid bone. ➢ Although they are not truly trabeculated cavities like the corpora cavernosa of the penis, the numerous plexuses, however, give the cavities their characteristic sponge-like appearance. ➢ The cavernous sinus is roofed by an inner layer of dura matter that continues with the diaphragma sellae that covers the superior part of the pituitary gland. The roof of the sinus also has several other attachments. ➢ Anteriorly, it attaches to the anterior and middle clinoid processes, posteriorly it attaches to the tentorium (at its attachment to the posterior clinoid process). Part of the periosteum of the greater wing of the sphenoid bone forms the floor of the sinus. ➢ The body of the sphenoid acts as the medial wall of the sinus while the lateral wall is formed from the visceral part of the dura mater. CONTENTS The cavernous sinus contains the internal carotid artery and several cranial nerves. Abducens nerve (CN VI) traverses the sinus lateral to the internal carotid artery. -
Anatomic Variations of the Nose and Paranasal Sinuses in Saudi Population
234 Original article Anatomic variations of the nose and paranasal sinuses in saudi population: computed tomography scan analysis Nada Alshaikha, Amirah Aldhuraisb aDepartment of Otolaryngology Head & Neck Background Surgery, Rhinology Unit, Dammam Medical Knowledge of the anatomy constitutes an integral part in the total management of Complex (DMC), bDepartment of ENT, King Fahad Specialist Hospital (KFSH), Dammam, patients with sinonasal diseases. The aim of this study was to obtain the prevalence Saudi Arabia of sinonasal anatomic variations in Saudi population and to understand their importance and impact on the disease process, as well as their influence on Correspondence to Nada Alshaikh, MD, Department of Otorhinolaryngology Head and surgical management and outcome. Neck Surgery, Dammam Medical Complex, Materials and methods Dammam - 31414, Saudi Arabia This study is prospective review of retrospectively performed normal computed e-mail: [email protected] tomography (CT) scans of the nose and paranasal sinuses in adult Saudi Received 13 November 2016 population at Dammam Medical Complex. The scans were reviewed by two Accepted 23 December 2016 independent observers. The Egyptian Journal of Otolaryngology Results 2018, 34:234–241 Of all CT scans that were reviewed, 48.4% were of female patients and 51.6% were of male patients. The mean age of the study sample was 38.5±26.5 years. The most common anatomic variation after excluding agger nasi cell was pneumatized crista galli, which was seen in 73% of the scans. However, the least common variation seen in this series was hypoplasia of the maxillary sinus, which was encountered in 5% of the cases. We did not detect a single pneumatized inferior turbinate among the studied scans. -
Septation of the Sphenoid Sinus and Its Clinical Significance
1793 International Journal of Collaborative Research on Internal Medicine & Public Health Septation of the Sphenoid Sinus and its Clinical Significance Eldan Kapur 1* , Adnan Kapidžić 2, Amela Kulenović 1, Lana Sarajlić 2, Adis Šahinović 2, Maida Šahinović 3 1 Department of anatomy, Medical faculty, University of Sarajevo, Čekaluša 90, 71000 Sarajevo, Bosnia and Herzegovina 2 Clinic for otorhinolaryngology, Clinical centre University of Sarajevo, Bolnička 25, 71000 Sarajevo, Bosnia and Herzegovina 3 Department of histology and embriology, Medical faculty, University of Sarajevo, Čekaluša 90, 71000 Sarajevo, Bosnia and Herzegovina * Corresponding Author: Eldan Kapur, MD, PhD Department of anatomy, Medical faculty, University of Sarajevo, Bosnia and Herzegovina Email: [email protected] Phone: 033 66 55 49; 033 22 64 78 (ext. 136) Abstract Introduction: Sphenoid sinus is located in the body of sphenoid, closed with a thin plate of bone tissue that separates it from the important structures such as the optic nerve, optic chiasm, cavernous sinus, pituitary gland, and internal carotid artery. It is divided by one or more vertical septa that are often asymmetric. Because of its location and the relationships with important neurovascular and glandular structures, sphenoid sinus represents a great diagnostic and therapeutic challenge. Aim: The aim of this study was to assess the septation of the sphenoid sinus and relationship between the number and position of septa and internal carotid artery in the adult BH population. Participants and Methods: A retrospective study of the CT analysis of the paranasal sinuses in 200 patients (104 male, 96 female) were performed using Siemens Somatom Art with the following parameters: 130 mAs: 120 kV, Slice: 3 mm. -
Normal and Abnormal Findings in Rhinoscopy
3/18/2016 Normal and Abnormal Findings in Rhinoscopy Brian C. Spector, MD Ear, Nose Throat and Plastic Surgery Associates Assistant Professor FSU College of Medicine Assistant Professor UCF College of Medicine Sixth Annual ENT for the PA-C | March 30 – April 3, 2016| Orlando, FL No Disclosures Sixth Annual ENT for the PA-C | March 30 – April 3, 2016| Orlando, FL Learning Objectives • Maximize diagnostic yield by understanding best technique for Rhinoscopy • Identify normal anatomy and variants of normal anatomy visualized in Rhinoscopy • Identify abnormal findings visualized in Rhinoscopy Sixth Annual ENT for the PA-C | March 30 – April 3, 2016| Orlando, FL 1 3/18/2016 Sixth Annual ENT for the PA-C | March 30 – April 3, 2016| Orlando, FL Nasal Septum Lateral Nasal Wall Sixth Annual ENT for the PA-C | March 30 – April 3, 2016| Orlando, FL 2 3/18/2016 Nasopharynx Mucosa Intact Sixth Annual ENT for the PA-C | March 30 – April 3, 2016| Orlando, FL Ehab Zayyan MD, PhD Anterior Rhinoscopy Non Dominant Hand. Index Finger on Nasal Tip. Keep open until fully removed to avoid pulling hairs. Headlight Illumination Nasal Septum: deviation, perforation, stigmata of recent or active bleeding Inferior Turbinates: color of mucosa, congestion, secretions Internal Nasal Valve ‐ Septum, floor, caudal border of upper lateral cartilage, anterior head of inferior turbinate. Narrowest part of nasal airway Middle Turbinates Mucosa Sixth Annual ENT for the PA-C | March 30 – April 3, 2016| Orlando, FL 3 3/18/2016 Nasal Endoscopy Flexible Nasal Endoscopy: Technique -
Osteoma of Internal Auditory Canal - a Rare Pathology
Jemds.com Case Report Osteoma of Internal Auditory Canal - A Rare Pathology Bhushita Nilesh Guru1, Bhushan Narayan Lakhkar2 1Department of Radiology, Datta Meghe Institute of Medical Sciences, Sawangi (Meghe), Wardha, Maharashtra, India. 2Department of Radiology, Datta Meghe Institute of Medical Sciences, Sawangi (Meghe), Wardha, Maharashtra, India. PRESENTATION OF CASE A 27-year-old female patient visited the Department of Radiology with complaints of Corresponding Author: right sided facial palsy and sensory-neural hearing loss from past 10 years. Otologic Dr. Bhushita Nilesh Guru, examination revealed both tympanic membranes to be normal. Audiometry revealed Associate Professor, Datta Meghe Institute of right sided sensory neural hearing loss. The patient was also having multiple facial Medical Sciences, Sawangi (M), spasms. Wardha, Maharashtra, India. HRCT temporal bone of the patient was done, and it showed a well-defined round E-mail: [email protected] to oval bony out-pouching arising from posterior wall of right internal auditory canal causing severe stenosis of porus acusticus with only 7 mm patency. (Figure 1) The DOI: 10.14260/jemds/2020/625 lesion was noted to be over the vestibulo-cochlear and the facial nerves. The cortex of the lesion was continuous with that of the parent bone. (Figure 2). The left internal How to Cite This Article: auditory canal was normal. Guru BN, Lakhkar BN. Osteoma of internal auditory canal: a rare pathology. J Evolution Med Dent Sci 2020;9(38):2863- 2864, DOI: 10.14260/jemds/2020/625 DISCUSSION Submission 19-06-2020, Peer Review 13-08-2020, Osteomas are one of the common benign bone pathologies. -
Surgical Anatamic of Paranasal Sinuses
SURGICAL ANATAMIC OF PARANASAL SINUSES DR. SEEMA MONGA ASSOCIATE PROFESSOR DEPARTMENT OF ENT-HNS HIMSR MIDDLE TURBINATE 1. Anterior attachment : vertically oriented, sup to the lateral border of cribriform plate. 2. Second attachment :Obliquely oriented- basal lamella/ ground lamella, Attached to the lamina papyracea ( medial wall of orbit anterior, posterior air cells, sphenopala‐ tine foramen 3. Posterior attachment :medial wall of maxillary sinus, horizontally oriented. , supreme turbinate 3. Occasionally 4. fourth turbinate, 5. supreme meatus, if present 6. drains posterior ethmoid drains inferior, middle, superior turbinates and, occasionally, the supreme turbinate, the fourth turbinate. e. Lateral to these turbinates are the corresponding meatuses divided per their drainage systems ANATOMICAL VARIATIONS OF THE TURBINATES 1. Concha bullosa, 24–55%, often bilateral, 2. Interlamellar cell of grunwald: pneumatization is limited to the vertical part of middle turbinate, usually not causing narrowing of the ostiomeatal unit 3. Paradoxic middle turbinate: 26%,. Occasionally, it can affect the patency of the ostiomeatal unit 4. Pneumatized basal lamella, falsely considered, posterior ethmoid air cell Missed basal lamella – attaches to lateral maxillary sinus wall Ostiomeatal unit Anterior ostiomeatal unit, maxillary, anterior ethmoid, frontal sinuses, (1) ethmoid infundibulum, (2) middle meatus, (3) hiatus semilunaris, (4) maxillaryOstium, (5) ethmoid bulla, (6) frontal recess, (7) uncinate process. , sphenoethmoidal recess Other draining osteomeatal unit, posterior in the nasal cavity, posterior ethmoid sinus, lateral to the superior turbinate, . sphenoid Sinus medial to the superior turbinate Uncinate Process Crescent‐shaped, thin individual bone inferiorly- ethmoidal process of inferior turbinate, anterior, lacrimal bone, posteriorly- hiatus Semilunaris, medial -ethmoid infundibulum, laterally, middle meatus superior attachment- variability, direct effect on frontal sinus drainage pathway. -
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Braz J Otorhinolaryngol. 2015;81(1 Supl. 1):S1-S49 Brazilian Journal of OTORHINOLARYNGOLOGY www.bjorl.org CONSENSUS Rhinosinusitis: evidence and experience October 18 and 19, 2013 - São Paulo Coordination Although VAS has only been validated for CRS in adults, Wilma T. Anselmo-Lima e Eulalia Sakano the European Position Paper on Rhinosinusitis and Nasal Polyps (EPOS) 20121 also recommends its use in ARS. There are sev- Participants eral specific questionnaires for rhinosinusitis, but in practice, 2-4 André Alencar, Atílio Fernandes, Edwin Tamashiro, most have limited application, particularly in acute cases. Elizabeth Araújo, Érica Ortiz, Fabiana Cardoso Pereira Valera, Fábio Pinna, Fabrizio Romano, Francini Padua, João Mello Jr., Acute rhinosinusitis João Teles Jr., José E. L. Dolci, Leonardo Balsalobre, Macoto Kosugi, Marcelo H. Sampaio, Márcio Nakanishi, Definition Marco César, Nilvano Andrade, Olavo Mion, Otávio Piltcher, Reginaldo Fujita, Renato Roithmann, Richard Voegels, ARS is an inflammatory process of the nasal mucosa of sud- Roberto E. Guimarães, Roberto Meireles, Shirley Pignatari, Victor Nakajima den onset, lasting up to 12 weeks. It may occur one or more times in a given period of time, but always with complete For the purpose of citation remission of signs and symptoms between episodes. Wilma Terezinha Anselmo Lima, Eulalia Sakano, Edwin Tamashiro, Elizabeth Araújo, Érica Ortiz, Fábio Pinna, Fabrizio Romano, Francini Padua, João Mello Jr., João Teles Jr., José E. L. Dolci, Classification Leonardo Balsalobre, Macoto Kosugi, Marcelo H. Sampaio, Márcio Nakanishi, Marco César, Nilvano Andrade, Olavo Mion, There are several classifications for RS. One of the most Otávio Piltcher, Reginaldo Fujita, Renato Roithmann, often used is the etiological classification, which is based Richard Voegels, Roberto E. -
Macroscopic Anatomy of the Nasal Cavity and Paranasal Sinuses of the Domestic Pig (Sus Scrofa Domestica) Daniel John Hillmann Iowa State University
Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 1971 Macroscopic anatomy of the nasal cavity and paranasal sinuses of the domestic pig (Sus scrofa domestica) Daniel John Hillmann Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Animal Structures Commons, and the Veterinary Anatomy Commons Recommended Citation Hillmann, Daniel John, "Macroscopic anatomy of the nasal cavity and paranasal sinuses of the domestic pig (Sus scrofa domestica)" (1971). Retrospective Theses and Dissertations. 4460. https://lib.dr.iastate.edu/rtd/4460 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. 72-5208 HILLMANN, Daniel John, 1938- MACROSCOPIC ANATOMY OF THE NASAL CAVITY AND PARANASAL SINUSES OF THE DOMESTIC PIG (SUS SCROFA DOMESTICA). Iowa State University, Ph.D., 1971 Anatomy I University Microfilms, A XEROX Company, Ann Arbor. Michigan I , THIS DISSERTATION HAS BEEN MICROFILMED EXACTLY AS RECEIVED Macroscopic anatomy of the nasal cavity and paranasal sinuses of the domestic pig (Sus scrofa domestica) by Daniel John Hillmann A Dissertation Submitted to the Graduate Faculty in Partial Fulfillment of The Requirements for the Degree of DOCTOR OF PHILOSOPHY Major Subject: Veterinary Anatomy Approved: Signature was redacted for privacy. h Charge of -^lajoï^ Wor Signature was redacted for privacy. For/the Major Department For the Graduate College Iowa State University Ames/ Iowa 19 71 PLEASE NOTE: Some Pages have indistinct print. -
Case Report Orbital Apex Syndrome Caused by Ethmoid Sinus Mucocele: a Case Report and Review of Literature
Int J Clin Exp Med 2017;10(1):1434-1438 www.ijcem.com /ISSN:1940-5901/IJCEM0041925 Case Report Orbital apex syndrome caused by ethmoid sinus mucocele: a case report and review of literature Li-Bo Dai1*, Chao Cheng2*, Jiang Bian2, He-Ming Han1, Li-Fang Shen1, Shui-Hong Zhou1, Yang-Yang Bao1, Jiang-Tao Zhong1, Er Yu1 1Department of Otolaryngology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, Zhejiang Province, China; 2Department of Otolaryngology, People’s Hospital of Jinhua City, Jinhua 321000, Zhejiang Province, China. *Equal contributors. Received October 15, 2016; Accepted November 16, 2016; Epub January 15, 2017; Published January 30, 2017 Abstract: Ethmoid sinus mucoceles are benign, expansile and cyst-like lesions, when sufficiently large, may causing compression of the optic nerve and nearby structures. We report an extremely rare case of ethmoid sinus mucocele causing orbital apex syndrome. A 59-year-old female presented with over one month history of left-side headache that worsened with left-side ophthalmodynia for six days, accompanied by left-side sudden ptosis and vision loss for half a day. Clinical findings were proved with that of a combined CN II, III, IV and VI paralysis. Computed tomographic scan demonstrated a dense homogeneous mass expanding the left ethmoid sinus and rarefaction of the lateral wall of the left ethmoid sinus with the contents compressing the optic nerve. She underwent a prompt endoscopic sinus surgery. Three days after the operation, the movement and vision of the left eye returned to normal, the left eye pain and headache had also resolved. -
ABCDEF Checklist" Based on 3D Radiological Images for Preoperative Planning of Endoscopic Sinus Surgery*
ORIGINAL CONTRIBUTION “ABCDEF Checklist" based on 3D radiological images for preoperative planning of endoscopic sinus surgery* 1 1 1 J.M. Maza-Solano , J. González-García , R. Moreno-Luna , J. Ambrosiani- Rhinology Online, Vol 1: 133 - 142, 2018 2 1 1 Fernández , E. Domínguez-Durán , S. Sánchez-Gómez http://doi.org/10.4193/RHINOL/18.054 1 Rhinology and Anterior Skull Base Department Section, University Hospital Virgen Macarena, Seville, Spain *Received for publication: 2 Department of Anatomy and Human Embryology, University of Seville, Seville, Spain August 21, 2018 Accepted: October 4, 2018 Published: October 6, 2018 Abstract Background: Endoscopic sinus surgery (ESS) is performed on endonasal landmarks that have great anatomical variability, there- fore a detailed preoperative study of these structures is necessary. Objective: To develop a checklist for the systematic identification of the paranasal sinuses and the skull base, based on 3D images that guide the planning and implementation of ESS to minimize complications and improve surgical outcomes. Methods: This study evaluates the usefulness of the “ABCDEF Checklist”, in a randomized study involving 30 otolaryngologists with more than 2 years of practical experience in ESS evaluating preoperative radiological examination and subsequent surgical performance in the sinus of 30 cadavers. Results: Differences between groups in identifying the essential anatomical references were significant in 9 of the 11 essential anatomical references for the Checklist Group Surgical procedures and surgical mistakes were performed systematically less often in the Checklist group but the differences did not reach significance after Bonferroni correction. Conclusions: The use of "ABCDEF Checklist" prior to ESS facilitates the identification of the essential anatomical references for the preoperative and systematized planning of the surgical procedures. -
Anatomic Variations of Sphenoid Sinus Pneumatization in a Sample of Turkish Population: MRI Study
Int. J. Morphol., 32(4):1140-1143, 2014. Anatomic Variations of Sphenoid Sinus Pneumatization in a Sample of Turkish Population: MRI Study Variaciones Anatómicas de la Neumatización del Seno Esfenoidal en una Muestra de Población Turca: Estudio por Resonancia Magnética Ozdemir Sevinc*; Merih Is**; Cagatay Barut*** & Aliriza Erdogan**** SEVINC, O.; IS, M.; BARUT, C. & ERDOGAN, A. Anatomic Variations of Sphenoid Sinus Pneumatization in a Sample of Turkish Population: MRI Study. Int. J. Morphol., 32(4):1140-1143, 2014. SUMMARY: There are a number of variations regarding morphometric anatomy and degree of pneumatization of the sphenoid sinus. In our study, we planned to examine and show the differences of pneumatization of the sphenoid sinus particularly to guide the neurosurgeon during transsphenoidal surgery. Sagittal T1-weighed spin-echo Magnetic Resonance Images (MRIs) of 616 adult individuals (406 women and 210 men) were analyzed, retrospectively. According to the collected data from our study, the most common type of the sphenoid sinus was the sellar type (83%; n=511) for the whole study group. Of the 616 individuals 16.6% (n=102) had presellar type and 0.5% (n=3) had conchal type of sphenoid sinus. Preoperative detailed detection of the anatomical characteristics of sphenoid sinus is essential. A thorough information obtained from studies of the regional anatomy and awareness of its variability can provide a safe and accurate transsphenoidal and extended endoscopic skull base approaches. KEY WORDS: Paranasal sinus; Pneumatization; Sphenoid sinus; Transsphenoidal approach. INTRODUCTION The sphenoid sinus is the most hidden and first years of life, it extends backward into the presellar area inaccessible of the paranasal sinuses which is approached and gradually expands into the area below and behind the by neurosurgeons via many surgical routes through basis sella turcica, and reaches its full size during adolescence cranii (Hewaidi & Omami, 2008).