Hyrtl’s fissure

Hyrtl's fissure (also known as tympanomeningeal fissure) is a congenital infra-labyrinthic fissure. It is a very rare cause of spontaneous CSF ottorhoea.

Radiographic features

  • this can be diagnosed on axial slices and coronal reformations
  • CT cisternography and radionuclide cisternography can diagnose this rare condition
  • heavily T2 weighted images are helpful in diagnosis


  • once the diagnosis is established attempt for closure of fissure can be planned through natural or synthetic materials
Share article

Article information

rID: 25517
Section: Pathology
Tags: stub, refs, cases
Synonyms or Alternate Spellings:
  • Hyrtl’s fissures
  • Hyrtl fissure

Support Radiopaedia and see fewer ads

Updating… Please wait.

Alert accept

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

Alert accept Thank you for updating your details.