title: [A case of acute subdural hematoma associated with convexity meningioma].
abstract: A 61-year-old normotensive woman was admitted to our hospital with complaints of severe headache and nausea. She has had a limp due to the poliomyelitis in her childhood. Three days before admission, she had a headache without unconsciousness. On admission, she was almost alert. Her vital signs were normal. A mild monoparesis of the atrophic right lower extremity was evident. This impairment was due to her past poliomyelitis. There were no other motor palsy, sensory loss, nuchal rigidity, and papilledema. A plain CT scan showed a crescent high density zone adjacent to a round high density mass in the left convexity. A cerebral angiogram showed a vascular left temporoparietal mass supplied by a middle meningeal artery. A craniotomy was then immediately performed. The well encapsulated tumor was totally resected, and the adjacent subdural hematoma was also evacuated. Histologically, the tumor was transitional meningioma with areas containing thin-walled vessels and focal necrosis. Postoperative course was uneventful. The origin of hemorrhage in this case would seem to be the thin-walled blood vessel with loss of vessel support. The clinical significance and the mechanism of the hemorrhage from the meningioma were discussed.
authors.affiliation: Department of Neurosurgery, Fuchu Keizinkai Hospital.
authors.forename: T
authors.initials: T
authors.lastname: Tokunaga
authors.forename: M
authors.initials: M
authors.lastname: Kuboyama
authors.forename: N
authors.initials: N
authors.lastname: Kojo
authors.forename: H
authors.initials: H
authors.lastname: Matsuo
authors.forename: M
authors.initials: M
authors.lastname: Shigemori
authors.forename: S
authors.initials: S
authors.lastname: Kuramoto
mesh_terms: D000208:Acute Disease; D005260:Female; D006408:Hematoma, Subdural / Q000209:etiology* / Q000601:surgery; D006801:Humans; D008577:Meningeal Neoplasms / Q000150:complications* / Q000473:pathology / Q000601:surgery; D008579:Meningioma / Q000150:complications* / Q000473:pathology / Q000601:surgery; D008875:Middle Aged