Primary malignant melanoma of the esophagus.
D000368:Aged; D000369:Aged, 80 and over; D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D004945:Esophagoscopy; D006801:Humans; D008297:Male; D008545:Melanoma / Q000000981:diagnostic imaging / Q000473:pathology*; D011859:Radiography