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Meckel cave

Meckel cave (trigeminal cave or Meckel cavity) is a cerebrospinal fluid-containing arachnoidal pouch protruding from the posterior cranial fossa and houses the trigeminal ganglion.



Meckel cave is situated at the posterolateral aspect of the cavernous sinus on either side of the sphenoid bone. Medial to the ganglion in Meckel cave is the internal carotid artery in the posterior portion of the cavernous sinus. Inferior is the motor root of the trigeminal nerve and the apex of the petrous temporal bone with the internal carotid artery travesering the carotid canal

Related pathology

There are many lesions of Meckel cave:

  • extrinsic lesions - destroy adjacent bone as they extend toward the Meckel cavity
  • intrinsic lesions - expand Meckel cave

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