What is pilonidal sinus disease (PNS)?
Pilonidal Sinus (or Pilonidal Cyst or Tailbone Cyst or Coccygeal Fistula), is a cyst (or multiple cysts) located in the upper cleft of the buttock, above the sacrum, containing hair that can form abscesses. It is a fairly common disease, mainly affecting young while male (15-30 years old) but can affect also female patients. Risk factors are: obesity (body mass index of 30 …
