Petroclivus meningioma causing trigeminal neuralgia

Case contributed by Dr Chris O'Donnell


Presents with left facial pain over the last few months

Patient Data

Age: 45
Gender: Female

Enhancing extra-axial mass at the junction of the clivus and petrous ridge distorting the left 5th nerve (and pons) as it exits Meckle's cave to enter the cistern (arrows)

Case Discussion

Several theories exist to explain the possible causes of this trigeminal nerve pain (neuralgia). It is usually idiopathic but can be associated with an enlarged, aberrant or ectatic artery compressing the nerve near its connection with the pons. Such compression can lead to pain attacks at the slightest stimulation of any area served by the nerve as well as hinder the nerve's ability to shut off the pain signals after the stimulation ends.

Other rarer causes include aneurysm, AVM or arachnoid cysts.  Tumors including Schwannoma and meningioma as well as malignant lesions such as perineural metastasis from SCC are encountered.



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Case information

rID: 33105
Published: 4th Jan 2015
Last edited: 16th Jul 2018
Inclusion in quiz mode: Included

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