Short Ciliary Nerveより発生した眼窩内Neurinomaの1例

Neurinoma of the Short Ciliary Nerve:A case report

I．はじめに

　眼窩内神経鞘腫は眼窩腫瘍の約1.5％程度でまれである．その発生母地となった神経を同定出来た症例は限られている．われわれは，short ciliary nerveより発生したと思える眼窩神経鞘腫を経験したので報告する．

Intraorbital neurinoma is a rare tumor and consti-tutes nearly 1.5% of the orbital tumors. A case of orbit-al neurinoma is reported. A 70-year-old woman was admitted with the chief complaint of impairment of visual acuity and proptosis of the left eye. A CT scan and MRI revealed a retrobulbar mass. Total removal of the tumor via the transcranial approach to the orbita re-sulted in improvement of the symptoms. The tumor was considered to be a neurinoma originating from the left short ciliary nerve.