Pooja Kundapur Suresh1, Kausalya Kumari Sahu2, Radha Ramachandra Pai3, Hanaganahalli Basaviah Sridevi1, Kirthinath Ballal4, Binit Khandelia5, Jessica Minal1, Rajendra Annappa6. 1. Assistant Professor, Department of Pathology, Kasturba Medical College, Manipal University , Mangalore, India . 2. Additional Professor, Department of Pathology, Kasturba Medical College, Manipal University , Mangalore, India . 3. Professor, Department of Pathology, Kasturba Medical College, Manipal University , Mangalore, India . 4. Assistant Professor, Department of Community Medicine, Kasturba Medical College, Manipal University , Mangalore, India . 5. Senior, Resident, Department of Pathology, Deen Dayal Upadhyay Hospital , New Delhi, India . 6. Assistant Professor, Department of Orthopedics, Kasturba Medical College, Manipal University , Mangalore, India .
Abstract
INTRODUCTION: Neuroendocrine differentiation in colorectal carcinomas, detected using immunohistochemistry and ultrastructural techniques, has been studied as a prognostic marker for invention of targeted therapy. There are a few studies done on this aspect which have shown conflicting results ranging from poor prognosis to no prognostic significance. AIM: The aim of the study was to determine the clinical significance of neuroendocrine differentiation in colorectal carcinomas using immunohistochemical stains such as chromogranin A & synaptophysin in relation to its prognostic significance. MATERIALS AND METHODS: A retrospective study was conducted wherein all the colorectal carcinomas, received in the Department of Pathology, over a period of 3 years, were reviewed. Neuroendocrine markers were done on 53 cases of moderately, poorly and undifferentiated adenocarcinomas. Based on the degree of immunoreactivity for these markers, tumours were divided into group 0, group 1, group 2, group 3 & group 4. Group 0 & 1 were categorized as neuroendocrine differentiation absent & group 2, 3 & 4 as present. Neuroendocrine differentiation was correlated with age, sex, grade, stage, diagnosis & survival. Follow up data of the cases was recorded. RESULTS: Neuroendocrine differentiation was present in 18 cases (33.9%). The degree of immunoreactivity for neuroendocrine markers in present study were; group 0- 58%, 1- 7.5%, 2- 9%, 3- 13% & 4- 11%. The mean age of patients was 54 years with a slight male preponderance {M:F::1.6:1}. Most of the carcinomas with neuroendocrine differentiation belonged to Grade II (61%) & Stage II & III (83%). Neuroendocrine differentiation did not show any significant association with age, sex, location, histological type, grade, stage & survival. CONCLUSION: The above results indicate that the presence of neuroendocrine differentiation cannot be recommended as a prognostic marker in colorectal carcinomas.
INTRODUCTION:Neuroendocrine differentiation in colorectal carcinomas, detected using immunohistochemistry and ultrastructural techniques, has been studied as a prognostic marker for invention of targeted therapy. There are a few studies done on this aspect which have shown conflicting results ranging from poor prognosis to no prognostic significance. AIM: The aim of the study was to determine the clinical significance of neuroendocrine differentiation in colorectal carcinomas using immunohistochemical stains such as chromogranin A & synaptophysin in relation to its prognostic significance. MATERIALS AND METHODS: A retrospective study was conducted wherein all the colorectal carcinomas, received in the Department of Pathology, over a period of 3 years, were reviewed. Neuroendocrine markers were done on 53 cases of moderately, poorly and undifferentiated adenocarcinomas. Based on the degree of immunoreactivity for these markers, tumours were divided into group 0, group 1, group 2, group 3 & group 4. Group 0 & 1 were categorized as neuroendocrine differentiation absent & group 2, 3 & 4 as present. Neuroendocrine differentiation was correlated with age, sex, grade, stage, diagnosis & survival. Follow up data of the cases was recorded. RESULTS: Neuroendocrine differentiation was present in 18 cases (33.9%). The degree of immunoreactivity for neuroendocrine markers in present study were; group 0- 58%, 1- 7.5%, 2- 9%, 3- 13% & 4- 11%. The mean age of patients was 54 years with a slight male preponderance {M:F::1.6:1}. Most of the carcinomas with neuroendocrine differentiation belonged to Grade II (61%) & Stage II & III (83%). Neuroendocrine differentiation did not show any significant association with age, sex, location, histological type, grade, stage & survival. CONCLUSION: The above results indicate that the presence of neuroendocrine differentiation cannot be recommended as a prognostic marker in colorectal carcinomas.
Entities:
Keywords:
Carcinoma of colon; Chromogranin; Prognostic marker; Synaptophysin
Authors: Ricardo V. Lloyd; Georgene Schroeder; Mitchel D. Bauman; James E. Krook; Long Jin; Richard M. Goldberg; Gist H. Farr Journal: Endocr Pathol Date: 1998 Impact factor: 3.943
Authors: Camilla Gallo; Roberta Elisa Rossi; Federica Cavalcoli; Federico Barbaro; Ivo Boškoski; Pietro Invernizzi; Sara Massironi Journal: World J Gastroenterol Date: 2022-03-21 Impact factor: 5.742