Abstract
A 40-year-old male visited our hospital because of an abnormal shadow on chest roentgenogram of a health examination. On the basis of enhanced chest CT scan findings, the mass lesion was suspected to be a pulmonary arteriovenous fistula. The patient was hospitalized and underwent surgical treatment. Cardiac catheterization revealed normal pulmonary arterial pressure. Pulmonary angiogram revealed a single arteriovenous fistula, which was composed of a single feeding artery and a draining vein (A8 and V8). Left lower lobectomy was performed. The post operative course has been uneventful without hypoxemia for one year.
