UNASSIGNED: Pineal region @entity5 are challenging to access because they are centrally located within the calvaria and surrounded by critical @entity531 . The goal of this work is to describe a new surgical trajectory, the anterior interhemispheric transsplenial approach, to the pineal region and falcotentorial junction area. To demonstrate this approach, the authors examined 7 adult @entity406 -fixed @entity1346 -injected cadaveric heads and 2 fresh @entity1 brain specimens. One representative case of @entity1653 treated through an anterior interhemispheric transsplenial approach is also described. Among the interhemispheric approaches to the pineal region, the anterior interhemispheric transsplenial approach has several advantages. 1) There are few or no bridging veins at the level of the pericoronal suture. 2) The parietal and occipital lobes are not retracted, which reduces the chances of approach-related morbidity, especially in the dominant hemisphere. 3) The risk of @entity75 is low because the @entity5 surface reached first is relatively vein free. 4) The internal cerebral veins can be manipulated and dissected away laterally through the anterior interhemispheric route but not via the posterior interhemispheric route. 5) Early control of medial posterior choroidal arteries is obtained. The anterior interhemispheric transsplenial approach provides a safe and effective surgical corridor for @entity1 with @entity979 that 1) extend superiorly, involve the splenium of the corpus callosum, and push the deep venous system in a posterosuperior or an anteroinferior direction; 2) are tentorial and displace the @entity1150 ; or 3) originate from the splenium of the corpus callosum.

Anterior interhemispheric transsplenial approach to XXXX : anatomical study and illustrative case.

@entity1 :: ('9606', 'Species') :: ['human', 'patients'] @entity979 :: ('MESH:D010871', 'Disease') :: ['supratentorial pineal region tumors'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'tumors'] @entity75 :: ('MESH:D001927', 'Disease') :: ['damage to the deep venous structures'] @entity406 :: ('MESH:D005557', 'Chemical') :: ['formalin'] @entity1150 :: ('MESH:D020246', 'Disease') :: ['deep venous system inferiorly'] @entity1346 :: ('MESH:D012828', 'Chemical') :: ['silicone'] @entity1653 :: ('MESH:D008579', 'Disease') :: ['falcotentorial meningioma'] @entity531 :: ('MESH:D013901', 'Disease') :: ['neurovascular structures']
@entity979 :: (MESH:D010871,Disease) :: ['pineal region tumors']
