Pilonidal sinus on the axilla in young females

Abstract

Two cases of pilonidal sinus of the axilla, which are thought to be the third and fourth described in the literature, are reported. Both patients were young females aged 21 and 22 years, respectively. In Case 1, an elliptical incision was performed, resulting in a moderate degree of hypertrophic scar formation. In Case 2, two incisions parallel to the wrinkle lines were used to prevent postoperative scarring. Macroscopically, four hairs growing from the proximal to the distal sinus were seen in Case 1. Meanwhile, one hair was in the track in Case 2, directing from the proximal to the distal sinus. Growth forces, and assorted factors such as shaving, minor infection, friction and maceration seemed to be the most probable causal mechanism of the pilonidal sinuses.