Aqueduct stenosis and Chiari I malformation

Case contributed by Dr Chris O'Donnell

Presentation

4 week history of headache, nausea and tremor of both hands

Patient Data

Age: 21
Gender: Male
Modality: MRI

Beautiful demonstration of septum pellucidum perforation, with dilatation of the 3rd and lateral ventricles and a focal septum in the aqueduct causing obstruction. Note the dysplastic (pyramidal shaped) cerebellar tonsils protruding through the formamen magnum.

Case Discussion

Typical findings of long standing aqueduct stenosis presenting in a young adult with associated Chiari I malformation.  The tonsils are dysplastic not just protruding as might be expected with obstructive hydrocephalus

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Case Information

rID: 16374
Case created: 14th Jan 2012
Last edited: 8th Oct 2016
Inclusion in quiz mode: Included

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