<prompt> The following statement about Pilonidal sinus is trueMore common in femalesMostly congentitalPrognosis after surgery is poorTreatment of choice is surgical excision of sinus tract  <response>: The term pilonidal sinus describes a condition found in the natal cleft overlying the coccyx, consisting of one or more, usually noninfected, midline openings, which communicate with a fibrous track lined by granulation tissue and containing hair lying loosely within the lumen. A common affliction amongst the military, it has been referred to as jeep disease. Ref: Bailey Love;s Sho Practice of Surgery,E25,Page-1247 