title: Massive intratumoral hemorrhage of ependymoma of the fourth ventricle.
abstract: BACKGROUND
  Ependymomas of the fourth ventricle usually show slowly progressive neurological deterioration and acute onset resulting from major intratumoral bleeding is very rare.
  
  
  METHODS
  A 16-month-old girl, previously in good health, showed gradual gait disturbance and appetite loss. She was transferred to our hospital because of a large enhanced tumor of the fourth ventricle with mild hydrocephalus. She suddenly lost consciousness on the next day. A computed tomography showed massive intratumoral hemorrhage and acute hydrocephalus. Emergency tumor removal was performed. Histopathological diagnosis was ependymoma.
  
  
  CONCLUSIONS
  We speculated the mechanism of intratumoral hemorrhage in posterior fossa ependymomas.
authors.affiliation: Department of Neurosurgery, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan. mhonda@net.nagasaki-u.ac.jp
authors.forename: Masaru
authors.initials: M
authors.lastname: Honda
authors.forename: Gohei
authors.initials: G
authors.lastname: So
authors.forename: Makio
authors.initials: M
authors.lastname: Kaminogo
authors.forename: Kuniko
authors.initials: K
authors.lastname: Abe
authors.forename: Izumi
authors.initials: I
authors.lastname: Nagata
mesh_terms: D000293:Adolescent; D002543:Cerebral Hemorrhage / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D004806:Ependymoma / Q000150:complications* / Q000473:pathology / Q000601:surgery; D005260:Female; D020546:Fourth Ventricle; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D012196:Review Literature as Topic; D014057:Tomography, X-Ray Computed