In 5 cases which I have encountered, severe gastro-intestinal hemorrhages from hemorrhagic and ulcerative gastrojejunitis occurred eighteen to thirty years following gastroenterostomy for congenital pyloric stenosis. Four of the patients were men and 1 was a woman. In all 5 cases after the gastroenteric anastomosis was disconnected and the region of hemorrhagic or ulcerative gastrojejunitis was excised, the opening in the jejunum was closed. Partial gastrectomy was performed with removal of at least half and up to two thirds of the stomach, including the site of the gastroenteric stoma. A Billroth I (von Haberer) type of anastomosis was made between the remainder of the stomach and the duodenum. In the von Haberer modification the entire cut end of the stomach is sutured to the cut end of the duodenum. The circumference of the stomach is decreased by interrupted reefing sutures. Excellent results followed this operation in every case. The first