Synchronous Primary Anorectal Melanoma and Sigmoid Adenocarcinoma

A primary anorectal malignant melanoma is a rare tumor. Moreover, cases involving a synchronous anorectal melanoma and colon adenocarcinoma are extremely rare. The authors report a case of a synchronous anorectal melanoma and sigmoid adenocarcinoma in an 84-year-old man. The regions of the anorectal...

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Bibliographic Details
Published inAnnals of coloproctology Vol. 32; no. 5; pp. 190 - 194
Main Authors Cho, Inju, Kim, Kyung Jong, Lim, Sung-Chul
Format Journal Article
LanguageEnglish
Published Korea (South) The Korean Society of Coloproctology 01.10.2016
대한대장항문학회
Subjects
Case Report
일반외과학
Adenocarcinoma
Anus
Sigmoid colon
Melanoma
Rectum
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ISSN2287-9714
2287-9722
2287-9722
DOI10.3393/ac.2016.32.5.190

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Summary:A primary anorectal malignant melanoma is a rare tumor. Moreover, cases involving a synchronous anorectal melanoma and colon adenocarcinoma are extremely rare. The authors report a case of a synchronous anorectal melanoma and sigmoid adenocarcinoma in an 84-year-old man. The regions of the anorectal melanoma showed melanocytic nevi in the adjacent mucosa of the anal canal and rectum. A dysplastic nevus was also identified in the anal mucosa. This case demonstrates that an anorectal melanoma can arise from pre-existing anorectal melanocytic lesions.
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G704-001375.2016.32.5.001
ISSN:2287-9714
2287-9722
2287-9722
DOI:10.3393/ac.2016.32.5.190