By Gary M. White, MD

Infantile perianal pyramidal protrusion (IPPP) is characterized by a solitary papular protrusion with a normal or rose-red surface, either anteriorly or posteriorly to the anus in an infant. There are three types:

It has been reported in association with hemangiomas (see below).

The pathogenesis is unknown, but it has been suggested that an area of constitutional weakness is present in the perineum in females.


Indian Dermatol Online J. 2014 Dec; 5(Suppl 2): S142–S143

Indian J Dermatol 2010;55:337-41

American Journal of Perinatology


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