The current treatment of choice for a large antrochoanal polyp in a 10-year-old is:
Intranasal polypectomy
Caldwell-Luc operation
FESS
Lateral rhinotomy and excision
(c) FESS(Ref. Cummings, 6th ed., 760)Antrochoanal polyp arise from the maxillary antrum and grow into the nasopharynx, hence they are always large at presentation and management is excision by FESS.
Nasal Polyposis