Paralysis of 3rd, 4th, 6th, nerves with involvement of ophthalmic division of 5th nerve, localizes the lesion to -
Cavernous sinus lesions may be associated with paralysis of 3rd, 4th, 5th (ophthalmic and maxillary divisions) and 6th nerve on account of its characteristic relations.
Cavernous sinus
Apex of orbit
Brainstem
Base of skull