Malignant melanoma of the anus.
R S
RS
Gist
J O
JO
Waits
D001005:Anus Neoplasms / Q000150:complications / Q000473:pathology* / Q000601:surgery; D006484:Hemorrhoids / Q000150:complications* / Q000601:surgery; D006801:Humans; D008297:Male; D008545:Melanoma / Q000150:complications / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged