Agenesis of the corpus callosum

Case contributed by Dr Ian Bickle


7 year-old. Diagnosed at birth to have corpus callosum abnormality. Lost to follow up.

Patient Data

Age: 7
Gender: Male
Modality: MRI

Absent of the corpus callosum.

A racing car appearance of ventricles (axial) and viking's helmet/moosehead appearance of ventricles (coronal) evident.

The lateral ventricles are widely spaced with dilated temporal horns.  High riding 3rd ventricle.

Case Discussion

Dygenesis of the corpus callosum, can be of varying extents from pure agenesis as in this case.

Classical features demonstrated;

  • racing car appearance of ventricles
  • viking's helmet/moosehead appearance of ventricles
  • widely spaced lateral ventricles
  • high riding 3rd ventricle

In addition a common associated of hippocampal atrophy, with very lateral temporal horns of the lateral ventricle as a result of this.  These measure 22 mm versus a normal of 2 mm.

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Case Information

rID: 23491
Case created: 19th Jun 2013
Last edited: 23rd Dec 2016
Inclusion in quiz mode: Included

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