Rectal sarcoma and anorectal malignant melanoma.
D001005:Anus Neoplasms; D006801:Humans; D008545:Melanoma; D012004:Rectal Neoplasms; D012007:Rectum; D012509:Sarcoma; D012811:Sigmoid Neoplasms
MELANOMA; RECTUM/neoplasms; SARCOMA