Abstract
Anorectal malignant melanoma (AMM) is a rare malignant disease with a poor prognosis. This disease is often confused with hemorrhoids. The most common site of malignant melanoma following skin and eye involvement is the anorectal region. This is the most commonly involved site in the gastrointestinal tract. We report the case of a 67-year-old patient with lower gastrointestinal hemorrhage for 4 months and hemorrhoid treatment for 2 months. The imaging revealed no distant metastasis but histopathologically, lymph node metastasis and invasion of surrounding tissues. Laparoscopic abdominoperineal resection (APR) was performed.
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