PMC6438861_01
(A) Sagittal FLAIR 3D volume rendering and (B) Sagittal T1-WI shows normal rostrum, genu and body of corpus callosum and absent splenium (arrow) (C) Axial section through cavum septi pellucidi and internal cerebral vein within the cistern of the velum interpositum. (D) Coronal T1-WI: the retrothalamic cistern and medial wall of the lateral ventricles atri are delimited by cingulis and precuneus gyrus due to the splenium absence.
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F1
However, unexpected appreciable agenesis of the splenium of the corpus callosum was found ( Figure 1) with no alterations in the brain parenchyma signal in the supra and infratentorial sites.