A Duodenal Metastasis From a Rectal Malignant Melanoma Primary: A Case Report

Abstract

Duodenal melanoma constitutes a very small number of gastrointestinal malignant melanomas. The small intestine is a common site for the metastatic spread of cutaneous melanomas; however, its metastatic involvement from a primary rectal melanoma origin has seldom been reported. We present the histopathologic features of an unusual case of primary rectal melanoma metastasizing to the duodenum.

Keywords

• Rectal melanoma
• Duodenal metastasis
• Malignant melanoma