title: An unusual case of large posterior fossa neurenteric cyst involving bilateral cerebellopontine angle cisterns: report of a rare case and review of literature.
abstract: BACKGROUND
  Intracranial neurenteric cysts are rare cystic masses of endodermal origin lined with mucin producing low columnar or cuboidal epithelium. Approximately 141 cases have been reported so far. Most of the posterior fossa neurenteric cysts are typically small, located anteriorly to the brainstem in the midline or in the cerebellopontine angle cistern area.
  
  
  METHODS
  We present a rare, histologically proven case of a large lobulated intracranial neurenteric cyst measuring 4.2 centimeters in the maximal transverse dimension and involving bilateral cerebellopontine angle cisterns. We also present a review of the literature on this uncommon finding.
  
  
  CONCLUSIONS
  Imaging features of neurenteric cyst are non-specific and it should be considered in the differential diagnosis for any intracranial extraaxial cystic lesion.
authors.affiliation: Department of Radiology, Nizams Institute of Medical Sciences, Hyderabad, India.
authors.forename: Richa
authors.initials: R
authors.lastname: Arora
authors.affiliation: Department of Radiology, Nizams Institute of Medical Sciences, Hyderabad, India.
authors.forename: Jyotsna Y
authors.initials: JY
authors.lastname: Rani
authors.affiliation: Department of Radiology, Nizams Institute of Medical Sciences, Hyderabad, India.
authors.forename: Megha S
authors.initials: MS
authors.lastname: Uppin
authors.affiliation: Department of Radiology, Nizams Institute of Medical Sciences, Hyderabad, India.
authors.forename: Rakesh
authors.initials: R
authors.lastname: Ca
keywords: Cerebellopontine Angle; Magnetic Resonance Imaging; Neural Tube Defects