[Malignant melanoma of the rectum--a rare disease with poor prognosis].
D000368:Aged; D006801:Humans; D008297:Male; D008545:Melanoma / Q000473:pathology*; D011379:Prognosis; D012004:Rectal Neoplasms / Q000473:pathology*
Malignt melanom i rectum--sällsynt sjukdom med dålig prognos.