Fig 1.

Superior view of right middle cranial fossa. The superficial middle cerebral vein (arrows) drains into the laterosellar region into the cavernous sinus. The superficial middle cerebral vein is not related with the lesser sphenoid wing during its course and it pierces the dura mater of the lateral wall of the cavernous sinus directly. Transition from arachnoid vein to dural venous sinus is abrupt. ICA signifies internal carotid artery; double arrow, tentorial edge; arrowheads, middle meningeal veins.