Cistern of lamina terminalis

The cistern of lamina terminalis is located in the center, right in front of the lamina terminalis and anterior commissure, in the lower part of the basal telencephalon. On each side, it is flanked by the inner surface of the posterior gyrus rectus and the septal region. Towards the front, it is bounded by the pia and arachnoid mater, in front of the anterior communicating arteries. It’s lower boundary is formed by the optic chiasm, and it’s back wall is made up of the lamina terminalis itself.

The cistern of lamina terminalis functions as a connection between the chiasmatic and pericallosal cisterns. Inside it, several components exist, such as the anterior cerebral artery, anterior communicating artery, recurrent artery of Heubner, arteries of the hypothalamus, origin of orbitofrontal arteries, and veins of the lamina terminalis. From a clinical and surgical perspective, it is important to note that aneurysms frequently develop in this area.