PT - JOURNAL ARTICLE AU - C A Potter AU - J Armstrong-Wells AU - H J Fullerton AU - W L Young AU - R T Higashida AU - C F Dowd AU - V V Halbach AU - S W Hetts TI - Neonatal giant pial arteriovenous malformation: genesis or rapid enlargement in the third trimester AID - 10.1136/jnis.2009.000299 DP - 2009 Dec 01 TA - Journal of NeuroInterventional Surgery PG - 151--153 VI - 1 IP - 2 4099 - http://jnis.bmj.com/content/1/2/151.short 4100 - http://jnis.bmj.com/content/1/2/151.full SO - J NeuroIntervent Surg2009 Dec 01; 1 AB - A neonate with congestive heart failure at birth due to a nearly holohemispheric pial arteriovenous malformation is described. This occurred despite a normal second trimester prenatal sonogram. Successful treatment of heart failure was achieved by embolization alone. This case demonstrates that hemodynamically significant lesions may arise later or enlarge more rapidly in utero than previously thought.