Microsurgical treatment of third ventricular colloid cysts by interhemispheric far lateral transcallosal approach--experience of 134 patients.
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.
Hernesniemi
Juha
J
Department of Neurosurgery, Helsinki University Central Hospital, 00260 Helsinki, Finland. juha.hernesniemi@hus.fi
Romani
Rossana
R
Dashti
Reza
R
Albayrak
Baki S
BS
Savolainen
Sakari
S
Ramsey
Christian
C
Karatas
Ayse
A
Lehto
Hanna
H
Navratil
Ondrej
O
Niemelä
Mika
M
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