Pneumosinus dilatans

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

Pathology

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

Complications

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

Associations

The presence of pneumosinus dilatans may be associated with an anterior skull base meningioma 3.

Differential diagnosis

  • pneumocele: enlarged aerated paranasal sinuses with thinned bony walls
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Article information

rID: 24599
System: Head & Neck
Tag: cases, cases
Synonyms or Alternate Spellings:
  • Sinus hyperpneumatisation
  • Sinus hyperpneumatization

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Cases and figures

  • Case 1: right frontal sinus
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  • Case 2
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  • Case 3
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