Paget's disease of the anus secondary to a malignant papillary adenoma of the rectum.
D001005:Anus Neoplasms / Q000209:etiology* / Q000473:pathology; D001706:Biopsy; D003537:Cystadenoma / Q000150:complications* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010145:Paget Disease, Extramammary / Q000209:etiology* / Q000473:pathology; D012004:Rectal Neoplasms / Q000150:complications* / Q000473:pathology