Trigeminal nerve: MRI anatomy and case presentation of trigeminal neuralgia due to arterial compression
Vol. 53 No. 4, 2012
ROMANIAN JOURNAL of MORPHOLOGY and EMBRYOLOGY
Anca Sava, Cristina Furnica, T. Petreus, Raluca Ozana Chistol, A. G. M. Motoc
Trigeminal neuralgia (TN), also known as tic douloureux is a chronic neuropathic pain disorder characterized by sporadic episodes of extreme, sudden burning or shock-like face pain that last from a few seconds to 2 minutes. Trigeminal neuralgia has a reported incidence of 5.9/100 000 women and 3.4/100 000 men in USA. The exact pathophysiology is still unclear, but demyelization leading to abnormal discharge in fibers of the trigeminal nerve is a probable cause. In the majority of cases, no structural lesion is detected but in almost 15% of patients medical imaging methods like MRI, CT or angiography can identify a vein or artery that compresses the nerve which results in focal demyelization. The authors present a case of trigeminal neuralgia investigated by MRI, which identified a vascular compression of the nerve 9 mm after emerging the pons by the superior cerebellar artery (SCA) and one of its branches. The authors also realize a review of the MRI anatomy of the trigeminal nerve.
Corresponding author: Anca Sava, MD; e-mail: dr_anca_sava@yahoo.com
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