<prompt> Treatment of choice for antrochoanal polyp: September 2009Intranasal polypectomyCaldwell-Luc operationEndoscopic sinus surgeryIntranasal ethmoidectomy  <response>: Ans. C: Endoscopic sinus surgery For the treatment of sinusitis, functional endoscopic sinus surgery FESS has superceded other modes, whereby normal clearance from the sinuses is restored by removing the anatomical and pathological obstructive variations that predispose to sinusitis. Caldwell-Luc operation is avoided. 