Metastatic melanoma of the stomach and the duodenum

Abstract

A case of metastatic melanoma of the antrum and duodenal bulb is reported with rare endoscopic findings. A 59-year-old male patient was presented with nausea, vomiting, and abdominal pain one year after excision of malignant melanoma from the back. The tumor was classified as Clark IV, Breslow III. Upper gastrointestinal endoscopy revealed one melanotic polypoid mass with ulcerations at the tip in the antrum and two in the duodenal bulb. Endoscopic biopsy of these polypoid masses showed malignant melanoma metastases. Patients with gastrointestinal symptoms and a history of melanoma should be investigated for the presence of gastrointestinal metastases even if the original primary malignancy was diagnosed years prior to the patient presentation.

Keywords

• melanoma
• neoplasm metastasis
• gastrointestinal neoplasms
• endoscopy
• gastrointestinal