title: Endoscopic cauterization of a symptomatic choroid plexus cyst at the foramen of Monro: case report.
abstract: OBJECTIVE
  Choroid plexus cysts are common in the developing fetus, and although often persisting into adulthood, they rarely represent the underlying cause of symptomatic unilateral ventriculomegaly. The case presented here highlights both the diagnostic obscurity and endoscopic management of a choroid plexus cyst in a symptomatic patient.
  
  
  METHODS
  The patient is a 47-year-old white woman who presented with acute exacerbation of debilitating, diffuse, and postural headache, nausea, vomiting, early papilledema, and short-term memory loss. Cranial magnetic resonance imaging revealed an intraventricular mass obstructing the foramen of Monro on the left with ventriculomegaly. Cranial computed tomographic imaging demonstrated unilateral ventricular enlargement.
  
  
  METHODS
  During stereotactic endoscopic exploration, a choroid plexus cyst was evident at the foramen of Monro. Endoscopic cauterization of the cyst resulted in a decrease in the size of the left lateral ventricle, with complete relief of the patient's headaches and resolution of her memory loss. She remained headache free at the time of a 3-year follow-up evaluation after surgery.
  
  
  CONCLUSIONS
  Choroid plexus cysts remain a diagnostic challenge; their presence should be sought out in the face of ventricular asymmetry and symptomatic hydrocephalus. Endoscopic ablation offers a minimally invasive treatment for the management of these lesions.
authors.affiliation: Department of Neurosurgery, School of Medicine and Biomedical Sciences, University at Buffalo, State University New York, and Department of Neurosurgery, Millard Fillmore Gates Hospital, Kaleida Health, Buffalo, New York, USA.
authors.forename: Andrea J
authors.initials: AJ
authors.lastname: Chamczuk
authors.forename: Walter
authors.initials: W
authors.lastname: Grand
mesh_terms: D002425:Cautery / Q000295:instrumentation / Q000379:methods*; D020863:Central Nervous System Cysts / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D002552:Cerebral Ventricles / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D016545:Choroid Plexus Neoplasms / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D004724:Endoscopy / Q000379:methods*; D005260:Female; D006801:Humans; D020547:Lateral Ventricles / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D008875:Middle Aged; D014696:Ventriculostomy / Q000295:instrumentation / Q000379:methods*