PILONIDAL CYST

By Gary M. White, MD

pilonidal sinus


The pilonidal cyst (PC) is a granulomatous reaction to a hair shaft penetrating the skin. It usually occurs in the gluteal cleft but may occur in the umbilicus. Males are preferentially affected 3-4:1.

Treatment

Any infection should be addressed with oral antibiotics and/or drainage. Then, surgery may be done. Referral to a general surgeon is appropriate.

Recurrence is often triggered by excessive hair in the area. Permanent laser hair removal has been recommended.

Additional Pictures

pilonidal sinus pilonidal sinus

Pilonidal cyst with granuloma formation. courtesy Michael O. Murphy, MD
pilonidal sinus with granuloma formation

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