Pilonidal sinus: clinical and ultrasonographic response to topical resorcinol 15.

pilonidal sinus (PS) is a common recurrent disease, often inflamed, usually located on sacral area, and causing high levels of morbidity. The incidence is estimated around 26 cases per 100,000, and it is more common in men (2:1). PS usually develops during the 2nd - 3rd decade of life.1 This article is protected by copyright. All rights reserved.