Hi, I underwent a left internal sphincterectomy for treating chroniq anal fissure last year. The sentinel tag was cut off also for better healing. The wound healed fine but some hard lump like gun shot ball  at the ridge of the anal on the place of the sentinel tag was forming. It has the colour of the skin but is hard and irritates the area with itching, spasm and anoying pain, not all the time but often. When I wear a tight pants it gets worse. What can be done about that? Thank for the answer.
Hello, Hard lump like a gunshot the ball at the site of removal of the sentinel pile and later subcutaneous sphincterotomy can be due to the formation of a cyst or a scar and so on.First get this checked out by the Surgeon to know the clinical diagnosis so that a proper management can be done. Till then do Site bath in a tub with warm water. Keep the area clean and Chat Doctor.  Take a Laxative or a stool softener to keep the stools soft. Do not fondle the area for fear of the spread of infection. Hope I have answered your query. Let me know if I can assist you further.