Pulmonary arteriovenous malformation.

A35-year-old white woman with a history of migraine headaches and a grade 2 systolic murmur presented with symptoms of slurred speech, left-sided facial droop, and left hemiparesis after a hysterectomy. These symptoms resolved over several days, and in an effort to identify a potential cardiac source of embolism, a transesophageal echocardiogram was performed. Findings were consistent with a rightto-left shunt, with intravenous saline contrast entering the left upper pulmonary vein (Figure 1A). An MRI study of the chest demonstrated a pulmonary arteriovenous malformation (AVM) in the left upper lobe (Figure 1B). The patient underwent pulmonary angiography, which confirmed the pulmonary AVM (Figure 2A) and also identified an additional AVM in the left lower lung. Multiple coils were placed to obliterate both AVMs (Figure 2B). The patient had no physical examination evidence of Osler-Weber-Rendu syndrome, and her systolic murmur was absent after the coil embolization. She was asymptomatic at a 6-month follow-up visit.