Abstract
A 69-year-old woman was admitted for abdominal pain and vomiting. Abdominal computed tomography showed significant dilation of the jejunum in omental bursa. Under diagnosis of hernia of the jejunum into omental bursa, conservative therapy was initiated. However, the herniation did not remit, so an operation was carried out. Laparotomy revealed an oval hernia hilus about 3 cm in diameter in the mesentery of the transverse colon. The small intestine was reverted by manipulation and had no necrosis, so the hernia hilus and sac were repaired by suture. It is thought that preoperative diagnosis of transmesocolic hernia is difficult, but we must consider the possibility of the disease when carrying out therapy.
