title: Low frequency of VHL germline mutations in Norwegian patients presenting with isolated central nervous system hemangioblastomas--a population-based study.
abstract: OBJECTIVE
  Explore the genetic and clinical incidence of von Hippel-Lindau disease in patients presenting with isolated central nervous system hemangioblastomas.
  
  
  RESULTS
  We report a 3.2% (1/31) and 25% (8/32) incidence of genetic and clinical VHL, respectively. One patient tested positive for a VHL mutation that has not previously been reported. This genotype phenotypically predicts VHL type 2B. We had seven patients with renal cysts. In a total follow-up of 33 person years, none of these cysts progressed to renal cell carcinoma.
  
  
  CONCLUSIONS
  von Hippel-Lindau disease anchored in germline mutations of the VHL gene is rare in the Norwegian population as opposed to clinical VHL disease, which appears to be relatively common in patients with apparently sporadic hemangioblastomas. There exists insufficient data regarding the natural history of patients with renal cysts, which makes it difficult to include or disregard these lesions as an entity of VHL disease.
authors.affiliation: Department of Neurosurgery, Oslo University Hospital, Ullevål, Norway. palronning@gmail.com
authors.forename: P
authors.initials: P
authors.lastname: Rønning
authors.forename: P A
authors.initials: PA
authors.lastname: Andresen
authors.forename: J K
authors.initials: JK
authors.lastname: Hald
authors.forename: K
authors.initials: K
authors.lastname: Heimdal
authors.forename: D
authors.initials: D
authors.lastname: Scheie
authors.forename: T
authors.initials: T
authors.lastname: Schreiner
authors.forename: E
authors.initials: E
authors.lastname: Helseth
mesh_terms: D000328:Adult; D016543:Central Nervous System Neoplasms / Q000175:diagnosis / Q000453:epidemiology / Q000235:genetics*; D003430:Cross-Sectional Studies; D004252:DNA Mutational Analysis; D005260:Female; D006580:Genetic Carrier Screening; D005820:Genetic Testing; D018095:Germ-Line Mutation; D018325:Hemangioblastoma / Q000175:diagnosis / Q000453:epidemiology / Q000235:genetics*; D006801:Humans; D052177:Kidney Diseases, Cystic / Q000175:diagnosis / Q000453:epidemiology / Q000235:genetics; D008297:Male; D008875:Middle Aged; D009664:Norway; D006623:von Hippel-Lindau Disease / Q000175:diagnosis / Q000453:epidemiology / Q000235:genetics*