Possible causes of constipation with pancreatitis include opioid analgesics, paralytic ileus, bowel obstruction, dehydration, hypercalcemia, and cystic fibrosis. Occasional constipation can also occur with chronic pancreatitis.
Overall, the risk of pancreatitis decreases after gallbladder removal surgery. The low risk is because of the removal of the gallstone-containing gallbladder during surgery. Small gallstones slipping from the gallbladder are the most common cause of pancreatitis.