[Repair of Morgagni's hernia by thoracoscopic surgery; report of a case].

An 84-year-old woman visited a local clinic with the complaint of upper abdominal pain and was referred to our hospital because of a suspected mediastinal tumor. Chest and abdominal computed tomography (CT) scanning were performed and Morgagni's hernia that contained omentum was identified on multiplanar reconstruction (MPR) images. Repair surgery was performed via mini-thoracotomy with thoracoscopy. The omentum witch was adherent to the hernial sac in the thorax was carefully dissected and was replaced in the abdomen. The diaphragmatic defect was closed and was reinforced with an expanded proline mesh patch. The thoracoscopic surgery with mini-thoracotomy can be a safe and effective method for repairing a Morgagni's hernia of which contents are thought to be omentum and when intrathoracic adhesions in the hernial sac are suspected.