title: [A case of petrotentorial meningioma presented as an acute subdural hemorrhage].
abstract: The authors report a rare case of petrotentorial meningioma presenting as acute subdural hematoma. A 60-year-old female was introduced to our hospital complaining of sudden headache and gait disturbance. CT and MRI demonstrated a petrotentorial tumor with a subdural hematoma in the posterior fossa. The tumor was enhanced intensively on MRI and showed the dural tail sign. The patient developed progressive impairment of consciousness along with hydrocephalus. After ventricular drainage, emergency intracranial decompression through hematoma evacuation and partial tumor resection was performed. One month later, she improved clinically and the tumor resected totally in the second craniotomy. Histological examination showed a meningothelial meningioma with high vascularity in part. She recovered uneventfully and was discharged on foot. We discussed the etiology of an acute subdural hematoma caused by intratumoral hemorrhage and reviewed past literatures.
authors.affiliation: Department of Neurosurgery, Shimane Central Prefectual Hospital, 4-1-1 Himebara, Izumoshi, Shimane 693-8555, Japan.
authors.forename: Takafumi
authors.initials: T
authors.lastname: Mitsuhara
authors.forename: Fusao
authors.initials: F
authors.lastname: Ikawa
authors.forename: Naohiko
authors.initials: N
authors.lastname: Ohbayashi
authors.forename: Yasutaka
authors.initials: Y
authors.lastname: Imada
authors.forename: Masaru
authors.initials: M
authors.lastname: Abiko
authors.forename: Tetsuji
authors.initials: T
authors.lastname: Inagawa
mesh_terms: D005260:Female; D020199:Hematoma, Subdural, Acute / Q000209:etiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008577:Meningeal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008579:Meningioma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008875:Middle Aged; D019635:Neurosurgical Procedures / Q000379:methods; D014057:Tomography, X-Ray Computed