Agenesis of the corpus callosum with interhemispheric cyst

Case contributed by Dr Rodrigo Dias Duarte


Patient presenting headache and episodes of memory loss.

Patient Data

Age: 15 years
Gender: Male

MRI demonstrates a large unilocular left paramedian CSF intensity mass lesion, that communicates with the third ventricle. It follows CSF on all sequences, including FLAIR. Also is noted the agenesis of the corpus callosum, with disproportionate prominence of the lateral ventricles, specially of the occipital horns (colpocephaly) and at the left side.

Axial images better demonstrates the association with polymicrogyria and grey matter heterotopia in the frontal left lobe.

See the main findings in the annotated images.

Case Discussion

Callosal agenesis along with the interhemispheric cyst, that appears to be an extension of the third ventricle, and in association with the malformations of cortical development, configures Barkovich type 1b.

PlayAdd to Share

Case information

rID: 56087
Published: 10th Oct 2017
Last edited: 14th Aug 2019
Inclusion in quiz mode: Excluded