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A multifocal schwannoma of the masseteric nerve causing hemicrania

1991; Elsevier BV; Volume: 71; Issue: 3 Linguagem: Inglês

10.1016/0030-4220(91)90309-z

1878-2175

Takenori Ishikawa, Kazuo Murakami, Ryoichi Yasui, Kohsaku Maeda, Kohji Tanaka, Tsunehiro SHIMOSATO,

Bone Tumor Diagnosis and Treatments

A case is reported of schwannoma of the right masseteric nerve, invading the pterygopalatine fossa and the parapharyngeal space through the mandibular notch in a 61-year-old woman. The tumor in this case was composed of four various-sized interconnected nodules, simulating a string of beads. The tumor was the cause of the patient's chronic hemicrania, as confirmed by the relief from and disappearance of head pain after surgical removal of the tumor. The most important aspects of this case are the anatomic site of the schwannoma and its uncommon clinicopathologic manifestations; this tumor originated from the masseteric nerve and is the first case reported to straddle the mandibular notch.