[Hemothorax associated with congenital pulmonary arteriovenous fistula; report of a case].

A 20-year-old man was admitted to our hospital with a sudden onset of dyspnea, caused by right pleural effusion. The patient was in a state of shock. Thoracentesis was revealed hemothorax. Right thoracotomy revealed pulmonary arteriovenous fistula projecting into the intrapleural space from the right upper lobe. Partial resection was performed. His postoperative course was uneventful. Intrapleural rupture of pulmonary arteriovenous fistula was reported rarely; therefore we described here our case.