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AJNR - American Journal of Neuroradiology

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A Small Pulmonary Arteriovenous Malformation as a Cause of Recurrent Brain Embolism

Kenichi Todo^a, Hiroshi Moriwaki^a, Masahiro Higashi^b, Kohji Kimura^b and Hiroaki Naritomi^a

^a Department of Cerebrovascular Medicine, National Cardiovascular Center, Osaka, Japan
^b Department of Radiology, National Cardiovascular Center, Osaka, Japan

View larger version (87K): [in a new window]   FIG 1. Diffusion-weighted MR images. A, Diffusion-weighted image on day 1 shows a high-signal-intensity area in the left cerebellar hemisphere (arrow). B, Diffusion-weighted image on day 5 shows a new ischemic lesion in the right cerebellar hemisphere (arrow).

View larger version (103K): [in a new window]   FIG 2. C-TCD findings before and after the embolization therapy. A, C-TCD shows many HITS (arrows) from the basilar artery before the embolization therapy. B, C-TCD failed to depict any HITS after the embolization therapy.

View larger version (127K): [in a new window]   FIG 3. Selective pulmonary angiogram shows a single PAVM with a feeding artery diameter of 1.8 mm.