====== Transcallosal approach to the third ventricle ======

see [[Transcallosal interhemispheric approach]].

a) anterior transcallosal: good visualization of both walls of the third ventricle; risk of bilateral fornicial damage

b) posterior transcallosal: allows approach to quadrigeminal plate or pineal region;risk of damage to deep veins.
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A plethora of surgical strategies have been described to reach deep-seated lesions situated within the third ventricle including the Rosenfeld, or [[transcallosal anterior interfoniceal approach]].