Most feared complication of endoscopic sinus surgery is?

ANSWER: (C) Internal carotid injury > (A) Retro orbital hematomaREF: Operative Otolaryngology: Head and Neck Surgery by Eugene N. Myers 2nd edition published by Elsevier chapter 20, Head and Neck Imaging by Peter M. Som and Hugh D. Curtin 5th edition published by Elsevier chapter 5Carotid artery injury during endonasal surgery is the most feared and catastrophic complication during sinus surgeries including FESS. Internal carotid artery injury is more frequent during skull base surgery, and risk factors include acromegaly, previous revision surgery, and prior radiotherapy and bromocriptine therapy. Injury to the ICA is the most devastating and, fortunately, the rarest complication. The ICA is vulnerable when surgery is performed in or around the posterior ethmoid air cells and the sphenoid sinus.Note:Orbital complications are most feared over all complication of FESSICA bleeding is most feared (single) complication of both FESS and open sinus surgeryRetro orbital hemorrhage are one of the most feared complication (after ICA bleed) in FESS y Bleeding is most feared complication of open sinus surgery