Year: 2014
Type: article
Study design: Case Report
Abstract: Malignant melanoma of the anal canal is a rare, but aggressive, tumor with a poor prognosis. It represents less than 1% of all melanomas and 4% of anorectal tumors. We are reporting this case because of its rarity in men and because, in this instance, the tumor was misdiagnosed as prolapsed thrombosed hemorrhoids and excised. Examination showed a visible exophytic irreducible growth measuring about 3 × 3 cm and protruding outside the anal verge and involving the anterior two-thirds of the circumference of the anal canal. A biopsy sample showed round to oval cells with prominent nucleoli and marked intracytoplasmic pigmentation. A magnetic resonance imaging scan showed a tumor with nearly complete luminal obstruction and liver metastasis. The patient received chemotherapy and radiotherapy, but the response was very poor and he died 2 months later.
Source: Formosan Journal of Surgery
Authors: T.A. Mala, R. Gupta, S.R. Ahmad, S.A. Malla, V.B. Gupta, I. Shah
Institutions: SMS Medical College, Shyam Shah Medical College
Language: English
Subfield: Oncology
Field: Medicine
Domain: Health Sciences
Open Access status: diamond
OpenAlex ID: W2029334239