title: Anaplastic supratentorial cortical ependymoma presenting as a butterfly lesion.
abstract: BACKGROUND
  Anaplastic cortical ependymomas are rare lesions with few cases reported in the literature.
  
  
  METHODS
  We present a unique case of an anaplastic cortical ependymoma in a 51-year-old female presenting as a butterfly lesion with involvement of both frontal lobes. The patient underwent gross total resection of her tumor with further adjuvant treatment. We present the findings in our case and review the literature surrounding supratentorial ependymomas and their treatment outcomes.
  
  
  CONCLUSIONS
  Rarely, cortical ependymoma can present as a butterfly lesion and should be considered in the differential diagnosis of such lesions in adults.
authors.affiliation: Department of Neurosurgery, National Neuroscience Institute, 11 Jalan Tan Tock Seng, Singapore.
authors.forename: David W K
authors.initials: DW
authors.lastname: Ng
authors.forename: Nicolas K K
authors.initials: NK
authors.lastname: King
authors.forename: Aaron S C
authors.initials: AS
authors.lastname: Foo
authors.forename: Yih-Yian
authors.initials: YY
authors.lastname: Sitoh
authors.forename: Hwei Yee
authors.initials: HY
authors.lastname: Lee
authors.forename: Wai Hoe
authors.initials: WH
authors.lastname: Ng
keywords: Adult; Anaplastic; Cortical; Ependymoma; Supratentorial