====== Transchoroidal approach ======

This approach is used for lesions within or projecting into the [[third ventricle]] like diencephalic/[[mesencephalic cavernoma]]s, [[thalamic glioma]]s, and other [[intraventricular tumor]]s. This [[approach]] is ideal for lesions principally situated behind the [[Foramen of Monro]] (FM), while more anterior lesions are usually accessed through the trans-foraminal route.

The [[transchoroidal approach]] provides direct access to the lesion without stretching the [[foramen of Monro]], thus avoiding [[fornix injury]]. The entry into the [[third ventricle]] can be achieved either through the trans-choroidal or the subchoroidal route, as first described in [[1978]] 
((Delandsheer JM, Guyot JF, Jomin M, Scherpereel B, Laine E (1978) Inter thalamo-trigonal approach to the third ventricle (author's transl). Neuro-Chirurgie 24:419–422)).
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see [[Interhemispheric Transcallosal Transchoroidal Approach]].