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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 25:428-430, March 2004
© 2004 American Society of Neuroradiology

Case Report
BRAIN

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

Address reprint requests to Kenichi Todo, MD, Department of Cerebrovascular Medicine, National Cardiovascular Center, 5–7-1, Fjishirodai, Suita, Osaka, 565-8565, Japan

Summary: We report a case of recurrent paradoxical brain embolism mediated through a small pulmonary arteriovenous malformation (PAVM) with a 1.8-mm-diameter feeding artery. In this case, the further recurrent stroke was prevented successfully by PAVM embolization. Although embolization therapy is currently recommended only for PAVMs with feeding arteries greater than 3 mm in diameter, the therapy may be needed also in the smaller PAVMs.