title: Primary malignant melanoma of the oesophagus.
mesh_terms: D003680:Deglutition Disorders / Q000209:etiology; D004938:Esophageal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006801:Humans; D008297:Male; D008545:Melanoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008875:Middle Aged; D011379:Prognosis