[Primary anal melanoma with visceral dissemination: a case presentation].

PubMed 2026

Authors: Diego Armando Huanay-Martínez, Álvaro Bellido-Caparó, Carlos García-Encinas, Alex Ventura‐León
Cited by: 0

Abstract

Primary anal melanoma accounts for less than 2% of all melanomas and anal tumors. It is highly aggressive, and its nonspecific clinical presentation can delay diagnosis. Despite advances in immunotherapy, surgical resection remains the only curative treatment in early stages. We report a case of a patient presenting with rectal bleeding and an anal mass, without involvement of the skin, eyes, or gastrointestinal tract. Immunohistochemistry was positive for S-100 and Melan-A. Hepatic and pulmonary metastases were identified, and the clinical course was unfavorable.

Fields of Study & Subjects

Cutaneous Melanoma Detection and Management Colorectal and Anal Carcinomas Veterinary Oncology Research

Publication details

Journal / source
PubMed
Volume
45
Issue
4
Pages
422–425
Publication date
13 January 2026
Language
ES