Pneumosinus dilatans

Pneumosinus dilatans is a term given to enlarged paranasal sinus air cells (hyperpneumatisation), 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.

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

Share article

Article information

rID: 24599
Tag: cases
Synonyms or Alternate Spellings:
  • Sinus hyperpneumatization
  • Sinus hyperpneumatisation

Support Radiopaedia and see fewer ads

Cases and figures

  • Drag
    Case 1: right frontal sinus
    Drag here to reorder.
  • Updating… Please wait.
    Loadinganimation

    Alert accept

    Error Unable to process the form. Check for errors and try again.

    Alert accept Thank you for updating your details.