Niyati Piles Clinic is best Pilonidal sinus clinic in Ghaziabad. We provide best facility in our patients. We used latest technology in our clinic. The top of the buttocks, where they separate, has a small hole or tunnel in the skin called a pilonidal sinus (the cleft). It does not always result in symptoms, and only when it becomes infected does it require treatment. For more information conatct us.