This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Operative Surgery, Subject name: ENT
[{'content': 'What is the treatment of choice for ethmoidal polyps? \nSelect and explain. \nA. Functional Endoscopic sinus surgery with polypectomy, B. Intranasal ethmoidectomy, C. Extranasl ethmoidectomy, D. Transantral ethmoidectomy', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Functional Endoscopic sinus surgery with polypectomy Surgical treatment of ethmoidal polyps1) Functional endoscopic sinus surgery (FESS) : Surgery of choice when available.2) Polypectomy : When there are one or two pedunculated polyps.3) Intranasal ethmoidectomy : Indicated when polyps are multiple and sessile.4) Extranasal ethmoidectomy : This is indicated when polyps recur after intranasal procedures.5) Transantral ethmoidectomy : Indicated when infection and polypoidal changes are also seen in the maxillary antrum. In this case antrum is opened by caldwell-Luc approach and the ethmoidal air cells approached through the medial wall of the antrum.", 'role': 'assistant'}]