Squamous cell carcinoma and pilonidal cyst disease.

Aim: Squamous cell carcinoma developed on a chronic pilonidal cyst.

Case Report: Authors describe the case of a squamous cell carcinoma developed on a chronic pilonidal cyst in a 63- years-old patient with a 43 years history of recurrent pilonidal sinus disease.

Results: The patient underwent incisional biopsy, staging with total body CT and, finally, radical surgery.