abnormale Erweiterung Nasennebenhöhlen

Pneumosinus dilatans is a term given to an enlarged aerated paranasal sinus (hyperpneumatisation) without thinning of its bony walls.

Epidemiology

The mean age at which new cases present was 27 years in the largest published series (n = 36), males were slightly more affected .

Associations

The presence of pneumosinus dilatans may be associated with an anterior skull base meningioma .

Pathology

It was initially described in the frontal sinuses but may involve any of the paranasal sinuses.

Treatment and prognosis

Complications

It may cause pneumocephalus either by rupturing or because of a defect.

Differential diagnosis

  • pneumatocele: enlarged aerated paranasal sinuses with thinned bony walls
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