Rectal Melanocarcinoma in an Elderly: A Case Report

Rectal melanocarcinoma is a rare and aggressive malignancy often misdiagnosed due to non specific presentation. Hereby the authors present a case of a 71-year-old male who presented with mild anal pain and occasional bleeding, along with a 3 cm protruding mass from the anal canal. Clinical examinati...

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Main Authors: Abhishek Ghose Biswas, Kishore M Hiwale
Format: Article
Language:English
Published: JCDR Research and Publications Private Limited 2025-04-01
Series:Journal of Clinical and Diagnostic Research
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Online Access:https://jcdr.net/articles/PDF/20829/77468_CE[Ra1]_F(SHU)_QC(PS_OM)_PF1(JY_OM)_PFA(IS)_PB(JY_IS)_PN(IS).pdf
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author Abhishek Ghose Biswas
Kishore M Hiwale
author_facet Abhishek Ghose Biswas
Kishore M Hiwale
author_sort Abhishek Ghose Biswas
collection DOAJ
description Rectal melanocarcinoma is a rare and aggressive malignancy often misdiagnosed due to non specific presentation. Hereby the authors present a case of a 71-year-old male who presented with mild anal pain and occasional bleeding, along with a 3 cm protruding mass from the anal canal. Clinical examination identified thrombosed external haemorrhoids and a suspicious 2 cm mass. Routine blood tests and Echocardiography (ECG) were unremarkable, but proctoscopic examination confirmed the presence of the mass, which was surgically excised. Histopathological analysis of the excised tissue revealed spindle and polygonal cells with prominent macronucleoli and melanin pigment in the cytoplasm, particularly at the squamocolumnar junction. Microscopic examination at various magnifications supported the diagnosis of rectal melanocarcinoma. Despite surgical intervention, the prognosis for rectal melanocarcinoma remains poor due to its aggressive nature and high potential for metastasis. The present case underscores the critical importance of early recognition and thorough histopathological evaluation of atypical anorectal lesions to avoid misdiagnosis.
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spelling doaj-art-599324f174654cb49e817d7bf50b8dd52025-08-20T02:08:58ZengJCDR Research and Publications Private LimitedJournal of Clinical and Diagnostic Research2249-782X0973-709X2025-04-01194010310.7860/JCDR/2025/77468.20829Rectal Melanocarcinoma in an Elderly: A Case ReportAbhishek Ghose Biswas0Kishore M Hiwale1Junior Resident, Department of Pathology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Sawangi, Wardha, Maharashtra, India.Professor, Department of Pathology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Sawangi, Wardha, Maharashtra, India.Rectal melanocarcinoma is a rare and aggressive malignancy often misdiagnosed due to non specific presentation. Hereby the authors present a case of a 71-year-old male who presented with mild anal pain and occasional bleeding, along with a 3 cm protruding mass from the anal canal. Clinical examination identified thrombosed external haemorrhoids and a suspicious 2 cm mass. Routine blood tests and Echocardiography (ECG) were unremarkable, but proctoscopic examination confirmed the presence of the mass, which was surgically excised. Histopathological analysis of the excised tissue revealed spindle and polygonal cells with prominent macronucleoli and melanin pigment in the cytoplasm, particularly at the squamocolumnar junction. Microscopic examination at various magnifications supported the diagnosis of rectal melanocarcinoma. Despite surgical intervention, the prognosis for rectal melanocarcinoma remains poor due to its aggressive nature and high potential for metastasis. The present case underscores the critical importance of early recognition and thorough histopathological evaluation of atypical anorectal lesions to avoid misdiagnosis.https://jcdr.net/articles/PDF/20829/77468_CE[Ra1]_F(SHU)_QC(PS_OM)_PF1(JY_OM)_PFA(IS)_PB(JY_IS)_PN(IS).pdfanorectal masshistopathologymalignant melanomarare malignancy
spellingShingle Abhishek Ghose Biswas
Kishore M Hiwale
Rectal Melanocarcinoma in an Elderly: A Case Report
Journal of Clinical and Diagnostic Research
anorectal mass
histopathology
malignant melanoma
rare malignancy
title Rectal Melanocarcinoma in an Elderly: A Case Report
title_full Rectal Melanocarcinoma in an Elderly: A Case Report
title_fullStr Rectal Melanocarcinoma in an Elderly: A Case Report
title_full_unstemmed Rectal Melanocarcinoma in an Elderly: A Case Report
title_short Rectal Melanocarcinoma in an Elderly: A Case Report
title_sort rectal melanocarcinoma in an elderly a case report
topic anorectal mass
histopathology
malignant melanoma
rare malignancy
url https://jcdr.net/articles/PDF/20829/77468_CE[Ra1]_F(SHU)_QC(PS_OM)_PF1(JY_OM)_PFA(IS)_PB(JY_IS)_PN(IS).pdf
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AT kishoremhiwale rectalmelanocarcinomainanelderlyacasereport