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Related Experiment Videos

Brain herniation into the mastoid in a normal hearing ear

H Swoboda1, T Czech, W Schima

  • 1Department of Otorhinolaryngology 1, University of Vienna, Austria.

ORL; Journal for Oto-Rhino-Laryngology and Its Related Specialties
|March 1, 1993
PubMed
Summary

A rare case of right temporal lobe abscesses stemmed from a mastoid-only endaural brain hernia. Surgical intervention involved mastoid débridement and duraplasty.

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Area of Science:

  • Neurology
  • Neurosurgery
  • Otolaryngology

Background:

  • Endaural brain herniation can lead to intracranial complications.
  • Mastoid surgery, such as antrotomy, may predispose to herniation.
  • Abscess formation requires prompt diagnosis and surgical management.

Observation:

  • A 40-year-old male presented with right temporal lobe abscesses.
  • The abscess origin was an endaural brain hernia involving the mastoid, without ossicular chain contact.
  • Previous infantile antrotomy was noted.
  • Clinical otologic signs were minimal, with normal hearing.
  • Temporal bone CT revealed retrotympanal space clouding and a tegmen antri defect.

Findings:

  • Computed tomography confirmed a defect in the tegmen antri, allowing herniation.
  • The abscess cluster was linked to the mastoid-specific herniation.
  • Despite sparse otologic findings, a significant intracranial infection was present.

Implications:

  • This case highlights the potential for delayed intracranial complications from seemingly minor mastoid defects.
  • Early recognition of subtle CT findings is crucial for diagnosing brain abscesses.
  • Surgical management, including débridement and dural repair, is essential for favorable outcomes.

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