title: Microsurgical treatment of third ventricular colloid cysts by interhemispheric far lateral transcallosal approach--experience of 134 patients.
abstract: BACKGROUND
  Colloid cysts are rare tumors (incidence 3.2/1000000 pear year) located in the anterosuperior part of the third ventricle. In this article, we present our microneurosurgical experience on 134 patients focusing on the nuances of ITA with demonstrative videoclips.
  
  
  METHODS
  This surgical series is based on the microsurgical experience of the senior author (JH) at 2 Finnish neurosurgical centers (Helsinki and Kuopio, 1980-2007). Surgical anatomy is demonstrated, and the pitfalls of the different surgical steps are analyzed to avoid complications. The series reflects the whole patient profile of Southern and Eastern Finland, without any selection bias.
  
  
  RESULTS
  There was no surgical mortality, and morbidity remained mainly transitory among 134 patients treated by ITA.
  
  
  CONCLUSIONS
  Favorable overall outcome of this series demonstrates that removal of third ventricular colloid cyst via transcallosal approach is a direct and safe way to treat these lesions.
authors.affiliation: Department of Neurosurgery, Helsinki University Central Hospital, 00260 Helsinki, Finland. juha.hernesniemi@hus.fi
authors.forename: Juha
authors.initials: J
authors.lastname: Hernesniemi
authors.forename: Rossana
authors.initials: R
authors.lastname: Romani
authors.forename: Reza
authors.initials: R
authors.lastname: Dashti
authors.forename: Baki S
authors.initials: BS
authors.lastname: Albayrak
authors.forename: Sakari
authors.initials: S
authors.lastname: Savolainen
authors.forename: Christian
authors.initials: C
authors.lastname: Ramsey
authors.forename: Ayse
authors.initials: A
authors.lastname: Karatas
authors.forename: Hanna
authors.initials: H
authors.lastname: Lehto
authors.forename: Ondrej
authors.initials: O
authors.lastname: Navratil
authors.forename: Mika
authors.initials: M
authors.lastname: Niemelä
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001932:Brain Neoplasms / Q000473:pathology* / Q000601:surgery*; D020863:Central Nervous System Cysts / Q000473:pathology* / Q000601:surgery*; D002648:Child; D015331:Cohort Studies; D003337:Corpus Callosum / Q000601:surgery; D004210:Dissection; D005260:Female; D006801:Humans; D008297:Male; D008866:Microsurgery / Q000379:methods*; D008875:Middle Aged; D012189:Retrospective Studies; D020542:Third Ventricle; D016896:Treatment Outcome