Diagnosed with desmoid tumor in duodenum. Had surgery jan2013 & on tamoxifen. Now CT clear and was wondering if he should have reverse bypass surgery.

Challenging. Desmoid tumors are notorious for coming back, even if they are resected completely. Tamoxifen often helps. Sometimes not operating and waiting it out is the best thing, so consult the opinion of your surgeon who knows you best. Reversing your bypass is a complicated process and requires a lot of discussion.