INFANTILE PERIANAL PYRAMIDAL PROTRUSION
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:
- Constitutional IPPP, which may at times be familial and/or congenital, remains unchanged over the years, and may have a papillomatous leaf-like shape with a rosy surface. The lesion is usually anterior to the anus, but not always.
- Functional IPPP is characteristic of patients affected by constipation with or without a fissure. In these cases, the lesion is rose red in color, pyramidal in shape, and may show recurrent episodes of swelling.
- IPPP associated with lichen sclerosus.
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
Homepage | FAQs | Use of Images | Contact Dr. White
It is not the intention of RegionalDerm.com to provide specific medical advice, diagnosis or treatment. RegionalDerm.com only intends to provide users with information regarding various medical conditions for educational purposes and will not provide specific medical advice. Information on RegionalDerm.com is not intended as a substitute for seeking medical treatment and you should always seek the advice of a qualified healthcare provider for diagnosis and for answers to your individual questions. Information contained on RegionalDerm.com should never cause you to disregard professional medical advice or delay seeking treatment. If you live in the United States and believe you are having a medical emergency call 911 immediately.