title: Computed tomographic evaluation of corpus callosum agenesis and associated malformations.
abstract: Agenesis of the corpus callosum is not an uncommon congenital malformation in neurologically symptomatic children. The computed tomographic scan characteristics of uncomplicated agenesis of the corpus callosum include: (a) widely separated parallel or nonconverging lateral ventricles; (b) "Bat wing" or "bullhorn" appearance of the frontal horns; (c) High-riding third ventricle which may be enlarged and have a tear-drop or rhomboid appearance; and (d) Selective dilatation of the occipital horns occurs frequently. Associated malformations identifiable by computed tomographic scan include Dandy-Walker cysts, interhemispheric cysts, porencephaly, Arnold-Chiari II malformations, and skull deformities.
mesh_terms: D000015:Abnormalities, Multiple / Q000000981:diagnostic imaging*; D061085:Agenesis of Corpus Callosum; D001139:Arnold-Chiari Malformation / Q000150:complications / Q000000981:diagnostic imaging; D001921:Brain / Q000002:abnormalities* / Q000000981:diagnostic imaging; D014695:Cerebral Ventriculography; D002648:Child; D003337:Corpus Callosum / Q000000981:diagnostic imaging; D003616:Dandy-Walker Syndrome / Q000150:complications / Q000000981:diagnostic imaging; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D014057:Tomography, X-Ray Computed