Callosal dysgenesis with interhemispheric cyst

Case contributed by Dr Alexandra Stanislavsky


New onset seizures.

Patient Data

Age: 20-25 years
Gender: Male

There is severe callosal dysgenesis, with colpocephalic orientation of the lateral ventricles and absence of the septum pellucidum.  Only a small segment of the callosal genu is present.  Anterior and posterior commissures are present. The falx is intact. A large left paramedian cyst is in direct communication with the frontal horn of the lateral ventricle. The adjacent frontal lobe is displaced laterally, but is otherwise intact (i.e. there is no gliosis or evidence of porencephaly).

No further associations of callosal dysgenesis are present - in particular, no midline lipoma, no schizencephaly, and the pituitary gland and infundibulum are present.

Case Discussion

Features of callosal dysgenesis with interhemispheric cyst (Barkovich type 1a) as a first diagnosis in a young adult patient.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.