Pulmonary arteriovenous fistula presenting as multiple brain abscess.

Pulmonary arteriovenous fisula is a rare condition in which there is abnormal connection between pulmonary arteries and veins. We describe this condition is an 18-year-old male who presented with cyanosis, clubbing, polycythemia and multiple brain abscesses. The patient was diagnosed as pulmonary arteriovenous fistula based on CT scan and on pulmonary angiography. The patient had a complete recovery after surgical drainage of brain abscess and excision of right upper lobe. After one year of follow up, there are no symptoms and there is complete reversal of cyanosis and polycythemia.