Heterotopic gastric mucosa situated in the small bowel distal to the Treitz suspensory ligament is very rare, except in Meckel's diverticulum and in intestinal duplications. There are two forms of this disease, congenital and acquired. The former is secondary to inflammatory bowel disease. The main difference between these forms is histological, although determining diverse physiopathological aspects. A case of a 34 year old man with heterotopic gastric mucosa in the terminal ileum manifested by intestinal obstruction is reported. He was treated surgically by enterectomy of two small bowel segments, both reconstructed by primary suture. His postoperative course was remarkable. The histopathologic study showed a typical pattern of the acquired type because of the presence of antral the antral mucosa and intense fibrosis. That is probably related to intestinal tuberculosis, but was not histologically confirmed. Individual and family recent history of pulmonary tuberculosis corroborates the suspicion. This is a unique report in the literature, among 28 other heterotopic gastric mucosa situated in the jejunum and ileum.