[A case of systemic artery to pulmonary vessel fistula].

A case of systemic artery to pulmonary vessel fistula was reported in this paper. A 44-year-old male who complained recurrent hemoptysis was admitted to our hospital. The angiography revealed an abnormal vascular network in the peripheral part of the 3rd intercostal artery. In this study, two isolated small aneurysms were also recognized in the right bronchial artery. For the purpose of surgical resection for them, video assisted right upper lobectomy was performed. Pathological study on resected specimen showed an artery came from extrapleural space penetrated the pleura and go deeper into the lung parenchyma the artery joined the arteriovenenous plexus which was located just beneath the thinned wall of the bronchiole. It is supposed that recurrent bleeding from the plexus perforated the thinned bronchial wall and caused intrabronchial hemorrhage.