Histopathological Analysis of Scaly Skin Lesions of Non-Infectious Etiology
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HISTOPATHOLOGICAL ANALYSIS OF SCALY SKIN LESIONS OF NON-INFECTIOUS ETIOLOGY Dissertation submitted to THE TAMILNADU DR.M.G.R MEDICAL UNIVERSITY, CHENNAI – 600032. In partial fulfillment of the requirement for the degree of Doctor of Medicine in Pathology (Branch III) M.D. (PATHOLOGY) APRIL 2017 DEPARTMENT OF PATHOLOGY CHENNAI MEDICAL COLLEGE HOSPITAL AND RESEARCH CENTRE TRICHY – 621 105. DECLARATION I solemnly declare that the dissertation entitled “HISTOPATHOLOGICAL ANALYSIS OF SCALY SKIN LESIONS OF NON INFECTIOUS ETIOLOGY” is a bonafide research work done by me in the Department of Pathology at Chennai Medical college Hospital & Research centre, Trichy during the period from July 2014 to July 31st 2016 under the guidance and supervision of DR. S. PRIYA BANTHAVI MD., Associate Professor, Department of Pathology, CMCH&RC, Trichy. This dissertation is submitted to the Tamilnadu Dr. M.G.R.Medical University, Chennai towards the partial fulfillment of the requirement for the award of M.D., Degree (Branch III) in Pathology. I have not submitted this dissertation on any previous occasion to any university for the award of any degree. Place: Trichy Date: DR.MANIMEGALAI.S ACKNOWLEDGEMENT It is my honour and privilege to thank Dr. S. PRIYA BANTHAVI M.D., Associate Professor, Department of Pathology, my guide, who at every moment has been a constant source of inspiration throughout my post-graduate programme. It gives me great pleasure and pride to be a post graduate student under Prof. Dr. V. SARADA M.D., Professor & H.O.D, Department of Pathology, who has been helping me and guiding me at every stage since the genesis of idea for this study. Her valuable suggestions and timely advice were of immense help to me, through all stages of this study. She has always been a great moral support and encouragement throughout the conduct of the study and also during my postgraduate course. I owe my sincere gratitude to her. I express my deep sense of gratitude towards Dr. N. BALASUBRAMANIAN M.D., Professor, my co-guide, Department of Dermatology, Chennai Medical College Hospital & Research Centre, for constant encouragement and timely advice with respect to this study. I thank our Dean, DR. SUKUMARAN ANNAMALAI M.D., D.H.H.M., Chennai Medical Hospital and Research Centre, Trichy for acknowledging the research work. I express my sincere gratitude to the formal Dean, DR.RAMAKRISHNAN M.D., Chennai Medical Hospital and Research Centre, Trichy for permitting me to conduct this study. I thank DR.C.GURUDATTA PAWAR M.D., Vice Principal, Chennai Medical Hospital and Research Centre, Trichy for his encouragement in completing this study. I thank Dr. SEETHA LAKSHMI, Assistant professor, Department of Dermatology, Chennai Medical College Hospital & Research Centre., for having been a great moral support, constant encouragement, motivation and advice. I thank my fellow postgraduate Dr. SEKAR LALITHA with all my heart for having been a great moral support throughout the conduct of the study and an absolutely wonderful colleague during my postgraduate period. I extend my gratitude to Dr. ROLAND MANOJ, Dr. VIVEKA and Dr. R. AKILA , Department of Pathology, Chennai Medical College Hospital & Research Centre who has been very supportive and ever encouraging in completing this study. I acknowledge my sincere thanks to all Professors, Associate professors and Assistant professors of department of pathology, Chennai Medical College Hospital, for their valuable opinions and illuminating views regarding this study. I shall ever remain indebted to my parents, family and friends for their encouragement and constant support. I express my heartfelt thanks towards the lab technicians and non- teaching fraternity of our department, who have been a significant support throughout my course. I sincerely thank all the patients without whom the study would not have been possible. Digital Receipt This receipt acknowledges that Turnitin received your paper. Below you will f ind the receipt inf ormation regarding your submission. The f irst page of your submissions is displayed below. Submission author: 201413601 Md Path S.Manimegalai Assignment title: 2015-2015 plagiarism Submission title: MANI EDITED THESIS File name: f inal_thesis.docx File size: 4.87M Page count: 86 Word count: 9,079 Character count: 53,943 Submission date: 22-Sep-2016 06:13PM Submission ID: 708022407 Copyright 2016 Turnitin. All rights reserved. CONTENTS S.NO. PARTICULARS PAGE NO. 01. INTRODUCTION 1 - 2 02. AIMS AND OBJECTIVES 3 03. REVIEW OF LITERATURE 4 - 37 04. MATERIALS AND METHODS 38 - 44 05. RESULTS 45 - 68 06. DISCUSSION 69 - 74 07. SUMMARY 75 - 76 08. CONCLUSION 77 09. BIBLIOGRAPHY ANNEXURES • PROFORMA 10. • CONSENT FORM • MASTER CHART LIST OF TABLES S.NO TITLE PAGE NO. 1. CD34 SCORING 44 2. AGE DISTRIBUTION OF PATIENTS STUDIED 45 3. GENDER DISTRIBUTION OF PATIENTS 47 STUDIED 4. AGE AND SEX DISTRIBUTION OF SCALY 48 SKIN DISEASE IN THE STUDY POPULATION 5. PRESENTING SYMPTOMS OF PATIENTS 50 STUDIED 6. THE SPECTRUM OF CLINICAL DIAGNOSIS 51 WITH GENDER CO-RELATION IN THE STUDY POPULATION 7. AGE DISTRIBUTION OF PATIENTS STUDIED 53 IN RELATION TO CLINICAL DIAGNOSIS 8. HISTOPATHOLOGICAL DIAGNOSIS WITH 55 GENDER CO-RELATION OF THE PATIENTS STUDIED. 9. CD34 DISTRIBUTION IN CO-RELATION TO 58 THE GENDER OF THE PATIENTS 10. COMPARISON OF PSORIASIS AND 59 PSORIASIFORM DERMATITIS USING CD34 MARKER 11. HISTOPATHOLOGICAL DIAGNOSIS 60 ACCORDING TO CLINICAL DIAGNOSIS 12. HISTOPATHOLOGICAL CORRELATION WITH 63 CLINICAL CORRELATION 13. COMPARISON OF AGE IN DIFFERENT 69 STUDIES 14. COMPARISON OF SEX DISTRIBUTION IN 70 DIFFERENT STUDIES 15. COMPARISON OF CLINICAL COMPLAINTS 71 16. HISTOPATHOLOGICAL DIAGNOSIS- 71 COMPARISON OF PSORIASIS IN VARIOUS STUDIES 17. HISTOPATHOLOGICAL DIAGNOSIS- 72 COMPARISON OF LICHEN PLANUS IN DIFFERENT STUDIES 18. CLINICAL AND HISTOPATHOLOGICAL 73 CORRELATION IN VARIOUS STUDIES LIST OF CHARTS S.NO. TITLE Page No. 1 AGE DISTRIBUTION OF PATIENTS STUDIED 46 2. SEX DISTRIBUTION OF SCALY LESIONS OF 47 NON INFECTIOUS ETIOLOGY 3. AGE AND SEX DISTRIBUTION OF SCALY SKIN 49 LESION 4 PRESENTING SYMPTOMS OF PATIENTS 50 STUDIED 5 THE SPECTRUM OF CLINICAL DIAGNOSIS 52 WITH GENDER CO-RELATION IN THE STUDY POPULATION 6. AGE DISTRIBUTION OF PATIENTS STUDIED 54 IN RELATION TO CLINICAL DIAGNOSIS 7. HISTOPATHOLOGICAL DIAGNOSIS WITH 56 GENDER CO- RELATION OF THE PATIENTS STUDIED 8. CD34 DISTRIBUTION IN CO-RELATION TO 58 THE GENDER OF THE PATIENTS 9. HISTOPATHOLOGICAL DIAGNOSIS 63 ACCORDING TO CLINICAL DIAGNOSIS 10. CLINICO PATHOLOGICAL CORRELATION 64 LIST OF FIGURES S.NO FIGURES PAGE NO. 1. EMBRYOLOGY OF SKIN 6 2. INTEGUMENTARY HISTOLOGY 7 3. LAYERS OF EPIDERMIS 8 4. HISTOPATHOLOGY OF PSORIASIS 22 5. HISTOPATHOLOGY OF LICHEN PLANUS 26 6. HISTOPATHOLOGY OF LICHEN NITIDUS 27 7. HISTOPATHOLOGY OF LICHEN STRIATUS 28 8. HISTOPATHOLOGY OF PARAPSORIASIS 30 9. HISTOPATHOLOGY OF PITYRIASIS ROSEA 31 10. HISTOPATHOLOGY OF PITYRIASIS RUBRA 33 PILARIS 11. HISTOPATHOLOGY OF PRURIGO NODULARIS 34 12. HISTOPATHOLOGY OF ERYTHEMA ANNULARE 35 CENTRIFUGUM LIST OF COLOUR PLATES S.NO FIGURES PAGE NO. 1. Hypopigmeted scaly lesion in the back 65 2. Histological section show parakeratosis, acanthosis and 66 elongation of rete ridges-PSORIASIS VULGARIS(H &E 40X) 3. Histological section shows Munro’s microabscess- 66 PSORIASIS VULGARIS(H &E 100X) 4. Histological section reveals epidermal hyperplasia and 66 spongiosis-PSORIASIFORM DERMATITIS(H & E 40X) 5. Histological section showing orthokeratosis, wedge 67 shaped hypergranulosis and band like inflammatory infiltrate in the upper dermis-LICHEN PLANUS(H &E 40X) 6. CD34 Immunostaining showing strong 67 positivity(400X) 7. CD 34 Immunostaining showing weak 68 positivity(400X) LIST OF ABBREVIATIONS VEGF Vascular Endothelial Growth Factor TNF Tumor Necrosis Factor IL Interleukin IFN Interferon CD Cluster Differentiation UV Ultraviolet MHC Major Histocompatibility Complex HHV Human Herpes Virus NGF Nerve Growth Factor AD Allergic Dermatitis IHC Immunohistochemistry LPP Large Plaque Parapsoriasis Introduction INTRODUCTION Skin is the largest organ in the body which has limited patterns of reaction in response to different pathological stimuli. Like other organ systems, proper clinical history and examination is important for skin diseases as well. Clinically different lesions may show similar histological patterns. Therefore, though histopathology is considered the gold standard in dermatological diagnosis, there exist few limitations and very often a definite ‘specific’ diagnosis is not possible. In such instances, the correlation of histopathological findings with clinical findings will aid in arriving at a plausible diagnosis and thereby help in the disease treatment. Studies in pathology have documented the extent of spread of various skin lesions and have made significant contribution to the understanding of etiology and pathogenesis1 Papulosquamous diseases form the largest conglomerate group of skin disease and are characterized by scaling papules or plaques. Scaly skin is the loss of the outer layer of the epidermis in large, thin flakes i.e. the outer layer of skin turns dry and peels away in large pieces like that of scales. Since papulosquamous diseases are all characterized by scaling papules, clinical confusion may result in their diagnosis. Therefore histopathological analysis is important for a more definitive differentiation. Separation of each of these conditions into different entities becomes 1 important because the treatment and prognosis is disease-specific. These lesions