[Adult bochdalek hernia after playing at a tug of war]

A 38-year-old female was admitted to Shonai Hospital with severe abdominal pain and nausea after playing at a tug of war in the athletic meeting. The X-ray film showed air above the left diaphragm, and CT scan and barium enema revealed the incarcerated transverse colon to the left thoracic cavity. Operation was performed through a thoracotomy. Because of no evidence of trauma, the case was diagnosed as adult Bochdalek hernia. Repair could be done by direct suture and her postoperative course was uneventful.