Seromucinous (salivary) ectopia of the perianal region.
Evans
C S
CS
Goldman
R L
RL
D001003:Anal Canal; D002828:Choristoma / Q000473:pathology*; D006801:Humans; D012469:Salivary Glands; D012470:Salivary Glands, Minor; D012878:Skin Neoplasms / Q000473:pathology*