Chronic Diahrrea

I am 62 years old, I had a Wilm's tumor removed when I was 2.  I had a reaccurance of cancer when I was 12 and had 2 ribs removed.  I also had my appentix removed at age 12.  I had 2 miscarrages and had a 2 month premature baby at age 26.  I started having diahrrea when I was around 40.  Over the last 5 years it has become chronic.  I had a problem with my enzme levels in my pancreas, which I've treated, but it did nothing for the diahrrea.  I also have a small bowel obstruction, which is now being diagnosed.  Has anyone else had a problem with chronic diahrrea.  Thanks for any feedback.