Abstract
Internal hernia involving the transverse mesocolon hernia is rarely diagnosed preoperatively, and laparotomy is usually performed to reduce and repair the hernia. We report a case of internal transverse mesocolon hernia that was diagnosed preoperatively and repaired laparoscopically. A 25-year-old woman who complained of abdominal pain and vomiting. The abdomen was soft and not distended, but there was epigastric pain. Coronal section image by computed tomography revealed the dilated small intestine was pointed cranially beyond the transverse mesocolon dorsally. Internal hernia involving the transverse mesocolon was suspected, and emergency laparoscopic surgery was performed. The small intestine was incarcerated into the defect on the posterior leaf of the transverse mesocolon. No ischemic changes were detected in the incarcerated intestine. Internal transverse mesocolon hernia was diagnosed. The hernial defect was repaired laparoscopically and the postoperative course was uneventful.