Abstract
Bochdalek hernia in adult is extremely rare, so symptoms or indications of surgery are not reported enough. Here we report a case of small-sized Bochdalek hernia with isolated shoulder pain that resolved after surgical reduction of hernia. A 25-year-old man with diaphragmatic mass was referred to out-patient clinic. Chief complaint was an isolated left shoulder pain evoked by surfeit. Diaphragmatic hernia was suggested on chest computed tomography (CT) but it was not certain. So, video-assisted thoracic surgery (VATS) exploration was planned to clarify the diagnosis. The mass was proven to be the Bochdalek hernia and successfully restored into abdominal cavity. There were no postoperative complications and isolated shoulder pain disappeared clearly.