Trigeminal neurinomas are rarely observed and result in different symptoms depending on the nerve they involve, we discuss the issue under the light of a case who has admitted to our department only with the complaint of muscular atrophy in the temporal region. Introduction Trigeminal neurinomas are rarely encountered tumors in the intracranial portion of the trigeminal nerve. Depending on the nerve root they involve they can have different clinical manifestations. We here present a case experiencing problems of mastication as a result of muscular atrophy in the temporal region. Case Report 22 year old male patient admitted to our outpatient department with the complaint of collapsing of the left temple region (Figure1). Furthermore, while chewing the food on the left side of the mouth difficulty was experienced. In the neurological examination, there was atrophy of the left temporal region and hypoesthesia of the V1 nerve region. Cornea reflex was not present on the left. Routine blood chemistry analyses were normal. On Cranial MR, there was a lesion with heterogeneously increased contrast enhancement in the left cavernous sinus at fifth nerve localization extending to Merkel's filtrum (Figures 2 and 3). The patient underwent left pterional craniotomy in the neurosurgery department and there was no residue identified on the MRI obtained after the operation (Figure 4). Histopathology revealed a typical neurinoma. In the physical examination carried out two months after the operation, there was a mild improvement in the muscle atrophy and mastication.
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