title: Oculomotor nerve schwannoma: a case report.
abstract: Schwannomas account for about 8% of intracranial tumors and 90% are vestibular schwannomas. Oculomotor schwannoma without neurofibromatosis is extremely rare. A 41-year-old female presented with complaints of blurred vision, and the neurologic examination revealed afferent pupillary defect and decreased visual acuity of the left side. Brain magnetic resonance image showed an extra axial mass in the left superior orbital fissure. The patient underwent major surgery via the fronto-temporal approach. The tumor originated from the oculomotor nerve and was subtotally removed under microscopic surgery. The pathological findings confirmed the tumor as a schwannoma. After surgery, ptosis and medial gaze limitation of the left eye was detected, but the symptoms improved gradually.
authors.affiliation: Brain Tumor Institute Medical Science Research Center, College of Medicine, Dong-A University, Busan, Korea. ; Department of Neurosurgery, College of Medicine, Dong-A University, Busan, Korea.
authors.forename: Yong-Hwan
authors.initials: YH
authors.lastname: Cho
authors.affiliation: Brain Tumor Institute Medical Science Research Center, College of Medicine, Dong-A University, Busan, Korea. ; Department of Neurosurgery, College of Medicine, Dong-A University, Busan, Korea.
authors.forename: Kyung-Su
authors.initials: KS
authors.lastname: Sung
authors.affiliation: Brain Tumor Institute Medical Science Research Center, College of Medicine, Dong-A University, Busan, Korea. ; Department of Neurosurgery, College of Medicine, Dong-A University, Busan, Korea.
authors.forename: Young-Jin
authors.initials: YJ
authors.lastname: Song
authors.affiliation: Brain Tumor Institute Medical Science Research Center, College of Medicine, Dong-A University, Busan, Korea. ; Department of Pathology, College of Medicine, Dong-A University, Busan, Korea.
authors.forename: Dae-Cheol
authors.initials: DC
authors.lastname: Kim
authors.affiliation: Brain Tumor Institute Medical Science Research Center, College of Medicine, Dong-A University, Busan, Korea. ; Department of Radiology, College of Medicine, Dong-A University, Busan, Korea.
authors.forename: Sunseob
authors.initials: S
authors.lastname: Choi
authors.affiliation: Brain Tumor Institute Medical Science Research Center, College of Medicine, Dong-A University, Busan, Korea. ; Department of Neurosurgery, College of Medicine, Dong-A University, Busan, Korea.
authors.forename: Ki-Uk
authors.initials: KU
authors.lastname: Kim
keywords: Oculomotor nerve; Schwannoma; Surgery