our 13 year old son is a 10 yr heart transplant. this Nov he began developing abdominal pain which intensified. he was hospitlaized in Dec where ct,PET, endoscp[y, stool, fungal thrush, tetsts were run for PTLD, lymphoma, EBV, cmv, mersa, zes, and ulcers. all came back neg negative. except for ulcers (h pilori) he saw about a week of relief and then it intensified. Now he has pancreatitis added to the problem. They are treating the ulcers w/ carofate. his lipase levels keep soaring (600-1500) every couple of days. any ideas?