Case Report: Trigeminal Neuralgia Caused by a Minute Meningioma with Hyperostosed Suprameatal Tubercle

Case Reports in Neurology
Yukitomo IshiKohei Echizenya

Abstract

Cerebellopontine angle tumors might occasionally provoke trigeminal neuralgia but are usually large enough to be diagnosed radiographically. We present a case of trigeminal neuralgia caused by a very small meningioma covering the suprameatal tubercle that displayed hyperostosis at the entrance of Meckel's cave and was not obvious on routine magnetic resonance (MR) images. A 72-year-old woman with intractable trigeminal neuralgia in the left V3 territory was referred to our institution. Preoperative imaging studies revealed that the left trigeminal nerve was medially distorted at the entrance of Meckel's cave by a laterally seated bone bulge covered by a minute enhanced lesion. Trigeminal nerve decompression surgery was performed via a retrosigmoid intradural suprameatal approach. We found a small meningioma that had compressed and flattened the trigeminal nerve root at the entrance of Meckel's cave, which was grossly and totally removed by suprameatal tubercle resection. There was no vascular compression of the trigeminal nerve root. The trigeminal neuralgia ceased completely after the operation. Accurate preoperative determination of the causative pathologies is essential to achieve adequate surgical results after microvascula...Continue Reading

Citations

Mar 16, 2017·Neurocirugía·Jacinto Mata-GómezMarta Ortega-Martínez
May 30, 2017·The Open Dentistry Journal·Fatemeh RezaeiHamid R Mozaffari
Jan 30, 2020·Acta neurochirurgica·Takuro InoueTakanori Fukushima
Apr 22, 2021·Surgical Neurology International·Jesus Manuel Esteban GarciaRuben Martin Laez

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