Enlarged vestibular aqueduct

Case contributed by Dr Roberto Schubert

Presentation

Patient with hearing loss, previously diagnosed with "arachnoid cyst".

Patient Data

Age: 25
Gender: Female
Modality: MRI

Massive enlargement of the left vestibular aqueduct (which contains the endolymphatic duct and sac). The other fluid-filled structures of the inner ear seem normal.

Case Discussion

Enlargement of the vestibular aqueduct and its contents is the most common component of congenital inner ear dysplasias. It is more often bilateral than unilateral and is associated with the Mondini malformation of the cochlea in about 8% of cases 1.

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Case Information

rID: 18136
Case created: 11th Jun 2012
Last edited: 22nd Nov 2015
System: Head & Neck
Inclusion in quiz mode: Included

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