Cistern of the lamina terminalis
The cistern of the lamina terminalis is one of the unpaired CSF-filled subarachnoid cisterns.
Gross anatomy
The cistern of lamina terminalis lies anterior to the anterior wall of the 3 ventricle in the midline and appears like a high-top tent with diamond-shaped floor. It acts as a connection between pericallosal and interpeduncular cisterns .
Boundaries
The following structures contribute to the walls of the cistern of lamina terminalis.
- lateral walls: gyrus rectus and bilateral septal areas
- posterior and posteroinferior walls: lamina terminalis
- floor: arachnoid between the optic nerves and superior surface of optic chiasm
- anterior: converged pia mater on the lateral walls of the cistern of lamina terminalis
Contents
- anterior cerebral arteries (A1 and A2 segments)
- anterior communicating artery
- recurrent artery of Heubner
- subcallosal artery
- orbito-frontal arteries
Related pathology
- anterior cerebral artery and anterior communicating artery aneurysms
