Anorectal malignant melanomas; a clinical study based on two cases.
D001005:Anus Neoplasms; D006801:Humans; D008545:Melanoma; D009369:Neoplasms; D012007:Rectum; D012878:Skin Neoplasms; D000096142:Cutaneous Malignant Melanoma
RECTUM/melanoma; TUMORS/melanoma