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Perineal skin tag (infantile perianal pyramidal protrusion)

Perineal skin tags may be congenital or acquired. They are generally asymptomatic, but may require surgical intervention if inflamed or traumatized. A similar appearance may occur as a manifestation of lichen sclerosus.

Cutaneous pseudosarcomatous polyp and umbilical polyp

Cutaneous pseudosarcomatous polyps and umbilical pseudosarcomatous polyps are benign proliferations with a tag-like configuration, but dramatic cytologic atypia and pleomorphism. The cells stain positive for vimentin and variably for CD34 and factor XIIIa. Their clinical behavior is benign.


Bord A, et al: Prenatal sonographic diagnosis of congenital perineal skin tag: case report and review of the literature. Prenat Diagn  2006 Nov; 26(11):1065-1067.

Cathro HP, et al: Cutaneous pseudosarcomatous polyp: a recently described lesion. Ann Diagn Pathol  2008 Dec; 12(6):440-444.