Pneumosinus dilatans

Case contributed by Dr Bruno Di Muzio


Brain CT scan for other reasons. Additional finding.

Patient Data

Age: 74
Gender: Female

CT Brain

Enlarged left frontal sinus air cells (hyperpneumatization).

Case Discussion

Pneumosinus dilatans is a term given to enlarged paranasal sinus air cells (hyperpneumatization), which may cause pneumocephalus either by rupturing or because of a defect. It was initially described in the frontal sinuses, but may involve any of the paranasal sinus.

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Case information

rID: 32059
Case created: 11th Nov 2014
Last edited: 10th Sep 2015
System: Head & Neck
Inclusion in quiz mode: Included

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