Crohn's disease?: Wow! "Many years" and no medical evaluation to report? But must have been done -- otherwise no way to know about "mass in upper colon". Maybe not just one problem. Inflammatory bowel disease is a good bet -- more likely Crohn's disease rather than ulcerative colitis. Keep working with your doctor(s); and see a gastroenterologist if that hasn't been done. Good luck!
Answered 11/26/2020
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