title: Traumatic hematoma of the posterior fossa.
abstract: Posterior fossa injury is rare, occurring in less than 3 % of head injuries. We retrospectively reviewed patients' clinical and radiological findings, management, and outcomes. The aim of the present study was to investigate the features of posterior fossa hematoma, including posterior fossa epidural hematoma (EDH), posterior fossa subdural hematoma (SDH), and intracerebellar hematoma. From January 1995 to January 2009, 4,315 patients with head trauma were hospitalized at our institution. The -present study focused on 41 patients (1.0 %) with traumatic hematomas of the posterior fossa. Eighteen patients had EDH, 10 patients had SDH, and 17 patients had intracerebellar hematomas. In each type of injury, occipital bone fractures were seen in many patients, and hematoma enlargement was often observed within a few days of the injury. In addition, a high frequency of associated lesions and a high poor outcome rate were features of intracerebellar hematomas and -posterior fossa SDH. The present study suggests that repeat CT imaging and careful management are necessary until the lesion is stabilized, and patients showing lesions with mass effects should therefore be immediately treated with surgery.
authors.affiliation: Department of Neurosurgery, National Defense Medical College, Saitama, Japan. s.takeuchi@room.ocn.ne.jp
authors.forename: Satoru
authors.initials: S
authors.lastname: Takeuchi
authors.forename: Kojiro
authors.initials: K
authors.lastname: Wada
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Takasato
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Masaoka
authors.forename: Takanori
authors.initials: T
authors.lastname: Hayakawa
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Yatsushige
authors.forename: Keigo
authors.initials: K
authors.lastname: Shigeta
authors.forename: Toshiya
authors.initials: T
authors.lastname: Momose
authors.forename: Naoki
authors.initials: N
authors.lastname: Otani
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nawashiro
authors.forename: Katsuji
authors.initials: K
authors.lastname: Shima
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002531:Cerebellum / Q000473:pathology; D002675:Child, Preschool; D003388:Cranial Fossa, Posterior / Q000473:pathology*; D005260:Female; D015600:Glasgow Coma Scale; D006406:Hematoma / Q000473:pathology*; D006407:Hematoma, Epidural, Cranial / Q000145:classification / Q000473:pathology*; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D055815:Young Adult