Pericallosal cistern

The pericallosal cistern is a curved subarachnoid cistern, filled with cerebrospinal fluid. It is located in the middle, below the falx cerebri, and between the two cerebral hemispheres. It is positioned above the corpus callosum, stretching from the splenium to the genu. Towards its front, it connects with the cistern of the lamina terminalis, which further connects with the chiasmatic cistern. Within this space, you can find the peri-callosal artery.

The contents of the pericallosal cistern can be divided into two parts: the front portion and the back portion. In the front part, you can find the anterior cerebral artery (A2 segment), middle cerebral artery, proximal medial striate artery, recurrent artery of Heubner, and callosomarginal arteries. Additionally, the front portion contains the anterior cerebral and orbital veins. Towards the back, the posterior portion of the pericallosal cistern contains the posterior pericallosal artery and vein, as well as occipital veins.