Atypical Presentation of Cavernous Sinus Infection with Intracavernous ICA Aneurysm.

In a typical presentation of intracavernous internal carotid artery aneurysm and cavernous sinus infection there is involvement of 3rd, 4th and 6th cranial nerves along with 2nd and 5th cranial nerve. Here we present a case of a 32 years old male with unilateral mycotic intracavernous internal carotid artery aneurysm with a history of head injury. Atypical features in this case was involvement of distantly situated multiple cranial nerves and sparing the 5th cranial nerve and optic nerve which are more near and commonly involved. Besides this patient has marked sphenoid sinusitis on left side but having no sign and symptoms.