Massive hemoptysis resulting from a fistula between the bronchus intermedius and pulmonary artery: a novel clinical presentation.

This is a case of a woman with massive hemoptysis, associated with a pulmonary artery pseudoaneurysm, and a fistula between the right pulmonary artery and bronchus intermedius. Bronchoscopic evaluation revealed an endobronchial mass in the right bronchus intermedius, suspicious for a tumor. Upon biopsy of the mass, massive bleeding occurred. The right lung was surgically resected. No specific etiology for the fistula was identified on pathologic examination. To our knowledge, this is the first report of a pulmonary artery-bronchial fistula presenting without typically known predisposing factors.