Agenesis of the corpus callosum
Updates to Study Attributes
The lateral ventricles demonstrate posterior colpocephaly and parallel configuration in keeping with callosal dysgenesis.
Left lateral ventricle measures 11.5 mm and right 9.6 mm. The third ventricle is high riding measuring 2 mm in diameter. The fourth ventricle measures 3 mm in AP diameter.Overlying CSF spaces are normal for age.
The corpus callosum appears completely absent with no crossing fibres identified.Left cerebral hemisphere has normal morphology and zonal anatomy.The right cerebral hemisphere demonstrates irregular cortical contour with associated abnormal parenchymal morphology affecting the medial frontal and parietal regions with sparing of the occipital lobe. These features are in keeping with a widespread cortical migrational abnormality
The cerebellar hemispheres and vermis have normal morphology with normal vermian herniation and lobules.Normal tegmentum vermian angle, retro cerebellar CSF space, pre pontine space, and brain stem. No foci of diffusion on DWI or susceptibility artefact on SWI (the latter not shown here)
Image MRI (T2) ( update )
Image MRI (T2) ( update )
Image MRI (T2) ( update )
Image MRI (DWI) ( update )
Image 1 MRI (T2) ( create )
Image 2 MRI (T2) ( create )
Image 3 MRI (T2) ( create )
Image 4 MRI (DWI) ( create )
Updates to Case Attributes
Neurosonography demonstrates findings that are highly suspicious forUltrasound and MRI features of complete dysgenesiscallosal agenesis. Note additional finding of a cortical migrational anomaly involving the corpus callosumright cerebral hemisphere on MRI. This includes, non-visualizationis a significant finding in terms of the corpus callosum, dorsal expansion of the 3rd ventricle forming a small interhemispheric cyst, a widened interhemispheric fissue, and colpocephaly with mild dilation of both ventricles (right: 10.5mm left : 11.4mm). There is possibly a very small arachnoid cyst adjacent to the midline and an aberrant path of the pericallosal arteryneurodevelopmental prognosis.
-<p>Neurosonography demonstrates findings that are highly suspicious for complete dysgenesis of the corpus callosum. This includes, non-visualization of the corpus callosum, dorsal expansion of the 3rd ventricle forming a small interhemispheric cyst, a widened interhemispheric fissue, and colpocephaly with mild dilation of both ventricles (right: 10.5mm left : 11.4mm). There is possibly a very small arachnoid cyst adjacent to the midline and an aberrant path of the pericallosal artery.</p>- +<p>Ultrasound and MRI features of complete callosal agenesis. Note additional finding of a cortical migrational anomaly involving the right cerebral hemisphere on MRI. This is a significant finding in terms of neurodevelopmental prognosis.</p>