title: Endoscopic diagnosis of malignant melanoma metastatic to the duodenum.
mesh_terms: D000328:Adult; D004379:Duodenal Neoplasms / Q000175:diagnosis*; D004724:Endoscopy; D006801:Humans; D008297:Male; D008545:Melanoma / Q000175:diagnosis*; D009362:Neoplasm Metastasis; D012878:Skin Neoplasms