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Related Experiment Videos

Mastoid air sinus abnormalities associated with lateral venous sinus thrombosis: cause or consequence?

John N Fink1, David L McAuley

  • 1Department of Neurology, Christchurch Hospital, (New Zealand). john.fink@cdhb.govt.nz

Stroke
|January 10, 2002
PubMed
Summary
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Mastoid abnormalities on MRI in patients with lateral venous sinus thrombosis (LST) are common but not indicative of infection. These changes likely result from venous congestion due to LST, not mastoiditis.

Area of Science:

  • Radiology
  • Neurology
  • Otolaryngology

Background:

  • Lateral venous sinus thrombosis (LST) is often linked to mastoiditis.
  • Uncertainty exists regarding mastoid abnormalities on MRI in LST patients without infection signs.

Purpose of the Study:

  • To systematically investigate the association between LST and mastoid air sinus abnormalities.

Main Methods:

  • Retrospective review of 26 patients with cerebral venous thrombosis.
  • Radiological assessment of mastoid abnormalities ipsilateral to thrombosed sinuses.
  • Clinical evaluation for signs of infection.

Main Results:

  • Mastoid abnormalities were found ipsilateral to 39% of thrombosed lateral sinuses (P<0.001).

Related Experiment Videos

  • No patients exhibited clinical evidence of mastoiditis.
  • Most patients with mastoid abnormalities recovered without antibiotics, and one showed MRI reversal of changes.

    • Conclusions:

    • Observed mastoid changes are likely a consequence of venous congestion from LST.
    • Findings suggest mastoid abnormalities in this context do not indicate active mastoiditis.