Your scan shows that there’s a small pocket of pus (an abscess) near the left side of your back passage, and it seems to have formed a small tunnel that connects inside. This is called a fistula. It won’t go away on its own. You’ll need to see a surgeon to get it treated properly, usually by a small procedure to clean the infection and close the tunnel. If not treated, it can keep coming back or get worse.

Any pus in body to be takem out is the ultimate gold standard treatment!f

Fistula in another with pus collection need surgery

Drink plenty of water, Take High Fiber Diet... Don't constipate...take laxatives... Operative procedure is the ultimate treatment...

It is fistula in ano with abscess formation, treatment would require surgical procedure