title: Spinal schwannoma with acute subarachnoid hemorrhage: a diagnostic challenge.
abstract: We report a case of spinal intradural schwannoma presenting with intracranial subarachnoid hemorrhage. Cerebral angiography studies were negative, but MR imaging of the spine revealed a large hemorrhagic tumor in the thoraco-lumbar junction. The tumor was misdiagnosed as ependymoma of the conus medullaris. This case illustrates the importance of a high index of suspicion for spinal disease in angiographically-negative subarachnoid hemorrhage and pitfalls in MR diagnosis of thoraco-lumbar tumors.
authors.affiliation: Department of Neuroradiology, National Neuroscience Institute, Singapore, Republic of Singapore.
authors.forename: Hemant
authors.initials: H
authors.lastname: Parmar
authors.forename: Boon Chuang
authors.initials: BC
authors.lastname: Pang
authors.forename: C C Tchoyoson
authors.initials: CC
authors.lastname: Lim
authors.forename: Soke Miang
authors.initials: SM
authors.lastname: Chng
authors.forename: Kheng Kooi
authors.initials: KK
authors.lastname: Tan
mesh_terms: D000208:Acute Disease; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009442:Neurilemmoma / Q000150:complications* / Q000175:diagnosis; D013120:Spinal Cord Neoplasms / Q000150:complications* / Q000175:diagnosis; D013345:Subarachnoid Hemorrhage / Q000209:etiology*