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Anorectal Melanomas: Case Series, Jinyu Zhang, Md, Matthew Sochat, Md, Edward R. Feller, Md
Anorectal Melanomas: Case Series, Jinyu Zhang, Md, Matthew Sochat, Md, Edward R. Feller, Md
The Medicine Forum
INTRODUCTION
Melanoma is the most common tumor to metastasize to the gastrointestinal (GI) tract. 60% of patients who die with malignant melanoma have GI involvement at autopsy1. Symptomatic disease presenting during life is unusual. Anorectal melanoma, a rare tumor that represents 1% of all melanomas and less than 4% of all anal malignancies, manifests with a range of non-specific symptoms and physical exam findings2. In fact, about one-third of lesions may be amelanotic3,4. Initial misdiagnosis as a benign lesion such as hemorrhoid is common.
We report 3 cases of anorectal melanoma presenting as primary GI complaints all without known cutaneous …