The term primary jejunal ulcer has been given to a group of cases in which a chronic circumscribed ulcer has been demonstrated in the jejunum. Morphologically, these lesions resemble peptic ulcer of the duodenum and they are of unknown etiology. There are some 50 authenticated instances recorded of the disease in the jejunum. Evert1analyzed 130 cases of small intestinal solitary ulcers in 1948. This review included examples of nonspecific ulcers in both jejunum and ileum as the same disease. Other authors* hold the view that the entity in the upper jejunum is separate and distinct from the commoner ileal ulceration, where known specific break-downs of aggregate lymph patches occur. The case presented here is an unusual primary jejunal ulcer, discovered at operation, located close to the ligament of Treitz, and recurrent after resection on two occasions. Recorded instances of reoperation on these lesions are unusual; one has been