RT Journal A1 Sánchez Fernández I, Peters JM T1 PIcture of the month—quiz case JF Archives of Pediatrics & Adolescent Medicine JO Archives of Pediatrics & Adolescent Medicine YR 2009 FD February 2 VO 163 IS 2 SP 179 OP 179 DO 10.1001/archpediatrics.2008.520-a UL http://dx.doi.org/10.1001/archpediatrics.2008.520-a AB At the age of 5 months, he had a left hemiparesis due to a right anterior cerebral artery stroke. At the age of 11 months, he presented with a right hemiparesis and focal right-sided seizures from a left middle cerebral artery stroke (Figure 1). The results of cardiologic evaluation, including cardiac ultrasonography, were normal. Extensive hematologic workup and genetic screening for a hypercoagulable state were unrevealing. Magnetic resonance imaging and the concurrent magnetic resonance angiogram prompted a conventional 4-vessel angiogram (Figure 2).