The third ventricle is parallel to the lateral ventricles, indicating corpus callosal dysgenesis / agenesis. On sagittal reconstruction, there was dysgenesis of the corpus callosum, with hypoplastic rostrum, genu and body (absent splenium). There is also a midline lipoma and unexplained frontal paramedian microcalcifications. Moreover, there is gyral thickening involving both frontal lobes, highly suggestive of pachygyria (this was confirmed on a previous MRI).