Pilonidal Sinus
Also known as: Sinus Pilonidal / Pilonidal Cyst / Pilonidal Cysts / Pilonidal cyst without abscess / Pilonidal cyst (morphologic abnormality) / Pilonidal cyst and sinus / Pilonidal cyst (disorder) / Hair sinus (disorder) / Pilonidal disease / Pilonidal disease (disorder)