[Two cases of paranasal sinusitis with choanal polyp in children].

Patients with choanal polyp often suffer from maxillary sinusitis of the same side. Hence, Caldwell-Luc operation in addition to polypectomy has been recommended for the treatment of choanal polyp. Choanal polyp occurs more frequently in children with nasal polyp(s) than in adults with nasal polyp(s). For this reason, it is preferable to perform surgery so as to preserve the maxillary sinus as much as possible. The authors surgically treated two children with choanal polyp. A 12-year-old girl had a choanal polyp arising from the posterior portion of the middle turbinate and received an osteoplastic maxillary operation and functional endoscopic sinus surgery (FESS). The other, a 13-year-old girl, with an antro-choanal polyp underwent FESS only. One year after surgery, both patients showed no recurrence of polyp and had recovered an aerated maxillary sinus cavity covered with normal mucous membrane. Based on the experiences of these two cases, FESS appears to be very helpful in treating children with choanal polyp and paranasal sinusitis.