hemangiomas are many a times found by chance while CT scan
is done for other reasons and they are often without any symptoms and dont require any active treatment.
as far as your anal fistula
problem is concerned you need to get examined by a surgeon to assess whether your fistula has healed completely or not. pelvic discomfort
and frequent bowel urges could be due to a different problem like Irritable Bowel or other bowel disease which will require a more detailed history.
meanwhile you can start by avoiding tea/coffee and spicy/oily food. take plenty of water and more of salads and leafy vegetables.
minimize milk intake. and do get yourself examined by a surgeon
wishing you a speedy recovery
Dr. Gaurav Shrivastav