<prompt> Paralysis of 3rd, 4th, 6th nerves with involvement of ophthalmic division of 5th nerve,localizes the lesion toCavernous sinusApex of orbitBrainstemBase of skull  <response>: 3,4,5 cranial nerves pass in relation to the lateral wall of cavernous sinus. 6th cranial nerve passes through the cavernous sinus. Ref - BDC 6th vol3 topic - cranial nerves ;pg350 