Comparison of conventional and extended middle meatal antrostomy for the treatment of antrochoanal polyps

Abstract Objective The objective was to compare the recurrence rate and complications between endoscopic middle meatal antrostomy (MMA) and extended MMA for the treatment of antrochoanal polyps (ACPs). Methods and materials 95 ACPs were prospectively enrolled to undergo MMA (n = 48) or extended MMA (n = 47). The recurrence rate and complications were compared between these groups. Results All patients completed 24 months of follow-up. The recurrence of ACP was demonstrated by only endoscope at 6 and 12 months postoperatively but at 24 months postoperatively by endoscope and CT. Rates of recurrence of ACP differed between groups and significance at postoperative month 6 (7/48 patients in the MMA group and 0/47 patients in the extended MMA group, P = 0.02), month 12 (16/48 vs. 2/47, P < 0.01) and month 24 (21/48 vs. 3/47, P < 0.01). No MMA closure was found in any group, 19.15% (9/47) patients complained of cheek numbness in the extended MMA group, however, no major complications were observed in both groups. Conclusions Extended MMA via antidromic extended medial wall of MS may effectively reduce the recurrence of ACP with lower complications.