Contralateral interhemispheric transcallosal transchoroidal approach to a thalamic glioma: illustrative case.

Background: Thalamic lesions located in the floor of the lateral ventricle pose significant surgical challenges, given their proximity to critical neurovascular structures. Transcortical approaches are often limited by risks of injuring the eloquent cortex and nearby vessels. Furthermore, lesions extending into the third ventricle further impede accessibility.