Repair of a perforation of the duodenal bulb may result in a stricture, which may be caused by the formation of an ulcer scar after surgery, as well as the possibility of ulcer reoccurrence or bleeding. Perforation of the duodenal bulb should be treated with emergency surgery to close the perforated area so that digestive fluids and food do not enter the abdominal cavity and cause peritonitis. Normally, the body heals faster, but because the duodenal bulb is weaker, the ulcer may recur or perforate again to cause bleeding, and another surgical procedure may be needed. The scarring of the ulcer formed after the repair surgery may lead to stenosis. Mild stenosis can be left untreated, but if the stenosis is more serious, you should seek medical attention and further treatment in order to avoid delaying your condition.