The prerequisite for endoscopic sinus surgery is: (A) MRI of paranasal sinuses, (B) CT of paranasal sinuses, (C) Mucocilliary clearing testing, (D) Acoustic tests
Answer is B. Endoscopic surgery of inflammatory diseases of paranasal sinuses (sinusitis or polyp) requires a very detailed preoperative knowledge of the individual anatomical conditions and pathological changesCT scan is used best to visualize sinus areasCT scan provides an excellent definition of paranasal sinuses and is a prerequisite for endoscopic surgeryRef: PL Dhingra, Diseases of Ear, Nose & Throat, 7th edition, pg no. 220 - 221