Dandy-Walker complex

Case contributed by Dr Charlie Chia-Tsong Hsu

Patient Data

Age: 18 years
Gender: Male

Vermis hypoplasia with an enlarged fourth ventricle communicating with the cistema magna. There is rotation of the hypoplastic cerebellar vermis and upward displacement of the torcular herophili. Associated agenesis of the corpus callosum with colpocephaly (appearance of disproportionate enlargement of the occipital horns). 

Annotated image

Image 1: Green arrow = vermian hypoplasia. Thick red line = superior border of the fourth ventricle. Yellow line = upward sloping tentorium cerebelli. Thin red line - outline of brainstem. 

Image 2: Red line indicates abnormal ventricular system with the "moose head" configuration on the coronal image. 

Case Discussion

Dandy-Walker complex type A.

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Case information

rID: 20263
Published: 8th Nov 2012
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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