Endoscopic Submucosal Dissection as a Diagnostic and Minimally Invasive Therapeutic Excision Modality for Primary Anorectal Malignant Melanoma

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Authors: Yusaku Yokotani, Hiroaki Kitae, Kyoka Ozawa, Mika Mazaki, Hoshu Kurebayashi, Koki Yamamoto
Cited by: 0
References: 24

Abstract

Primary anorectal malignant melanoma is a rare mucosal malignancy with nonspecific symptoms, frequent misdiagnoses, delayed treatment, and the lack of an established standard therapeutic strategy are the reasons for a poor prognosis. Diagnostic challenges are further compounded by the low rate of preoperative histological confirmation, especially for amelanotic lesions. Given its poor prognosis, performing a less invasive resection is crucial. We herein report the case of an 82-year-old male patient who underwent endoscopic submucosal dissection as a total biopsy and was treated with immune checkpoint inhibitors as adjuvant therapy.

Fields of Study & Subjects

Cutaneous Melanoma Detection and Management Colorectal and Anal Carcinomas Colorectal Cancer Surgical Treatments

Publication details

Journal / source
Internal Medicine
Volume
65
Issue
20
Pages
2690–2694
Publication date
9 February 2026
Language
EN