A fistula-in-ano is an abnormal hollow tract or cavity that is lined with granulation tissue and that connects a primary opening inside the anal canal to a secondary opening in the perianal skin; secondary tracts may be multiple and can extend from the same primary opening. They're usually the result of an infection near the anus causing a collection of pus (abscess) in the nearby tissue. When the pus drains away, it can leave a small channel behind.
Just inside your anus are several glands that make fluid. Sometimes, they get blocked or clogged. When that happens, a bacteria buildup can create a swollen pocket of infected tissue and liquid. Doctors call this an abscess.
If you don't treat the abscess, it'll grow. Eventually, it'll make its way to the outside and punch a hole in the skin somewhere near your anus so the gunk inside it can drain. The fistula is the tunnel that connects the gland to that opening.
The most common type of surgery for anal fistulas is a fistulotomy. This involves cutting along the whole length of the fistula to open it up so it heals as a flat scar.
It is a day care procedure performed under anesthesia in 30minutes post which the patient can be discharged. Laser energy is delivered by radial fiber directly in the sub mucosal hemorrhoidal nodes to shrink the nodes from inside. Moreover, infrared (laser) energy is used to reduce the blood supply nourishing the abnormal growth. LASER SURGERY prevents the occurrence or recurrence of a prolapse.