Thank you for the query.
What you are probably dealing with is ulcerative colitis
. However it cannot be recognized with CT only. To get it diagnosed, colonoscopy
with samples collection should be performed. There is a lot of possible treatments. The best is biologic treatment. It gives very good results and chances of remission. In some cases, when none if medicines works, surgery with total large intestine removal gives permanent relief from this disease.
But before treatment it has to be histological confirmed.
Hope this will help.