From: Comparison of conventional and extended middle meatal antrostomy for the treatment of antrochoanal polyps
MMA (n = 48)
Extended MMA
(n = 47)
P
Post-6 months, n (%)
7 (14.58)
0 (0.00)
0.02
Post-12 months, n (%)
16 (33.33)
2 (4.26)
< 0.01
Post-24 months, n (%)
21 (43.758)
3 (6.38)