Venous Drainage - Supero-lateral surface

The supero-lateral surface of the cerebral hemisphere is drained mainly by the superficial cerebral veins, which lie within the subarachnoid space. The superior cerebral veins drain the upper parts of the frontal, parietal and occipital lobes and ascend to empty into the superior sagittal sinus. The superficial middle cerebral vein runs along the lateral sulcus and drains predominantly into the cavernous or sphenoparietal sinus. It communicates with the superior sagittal sinus through the superior anastomotic vein (vein of Trolard) and with the transverse sinus through the inferior anastomotic vein (vein of Labbé). These valveless venous channels provide important collateral pathways for cerebral venous drainage.