Congenital odontoid aplasia and posterior circulation stroke in childhood.
Head trauma and vigorous physical activity were followed by delayed-onset posterior circulation stroke in a 5-year-old boy with odontoid aplasia and C1-C2 subluxation. Angiography demonstrated vertebral artery narrowing and occlusion of the left anterior-inferior cerebellar and posterior cerebral arteries. Odontoid aplasia and other atlantoaxial dislocations are treatable causes of posterior circulation insufficiency in childhood; these defects may be overlooked without appropriate radiographic study of the cervical spine using flexion-extension views.
Phillips
P C
PC
Department of Neurology, Johns Hopkins Hospital, Baltimore, MD 21205.
Lorentsen
K J
KJ
Shropshire
L C
LC
Ahn
H S
HS
D001268:Atlanto-Axial Joint / Q000000981:diagnostic imaging / Q000293:injuries*; D001368:Axis, Cervical Vertebra / Q000002:abnormalities*; D002561:Cerebrovascular Disorders / Q000000981:diagnostic imaging / Q000209:etiology*; D002675:Child, Preschool; D006259:Craniocerebral Trauma / Q000150:complications*; D006801:Humans; D004204:Joint Dislocations / Q000150:complications* / Q000000981:diagnostic imaging; D008279:Magnetic Resonance Imaging; D008297:Male; D009809:Odontoid Process / Q000002:abnormalities*; D011859:Radiography