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Table 2 Choanal Atresia Characteristics and Associations

From: A national study of choanal atresia in tertiary care centers in Canada – part I: clinical presentation

Variable Category Unilateral CA No. (%) Bilateral CA No. (%) Total No. (%)
Type of CA Membranous 10 (9.0) 10 (12.7) 20 (10.5)
Bony 16 (14.4) 15 (19.0) 31 (16.3)
Mixed 85 (76.6) 54 (68.4) 139 (73.2)
Laterality of CA Right 80 (65.5) 80 (37.2)
Left 42 (34.4) 42 (19.5)
Bilateral 93 (100) 93 (43.3)
Associated anomalies Yes 47 (39.2) 65 (69.9) 112 (52.6)
No 73 (60.8) 28 (30.1) 101 (47.4)
Associated syndrome Yes 23 (20.2) 37 (45.1) 60 (30.6)
No 91 (79.8) 45 (54.9) 136 (69.4)
 If yes, CHARGE Yes 10/23 (43.5) 25/37 (67.6) 35/60 (58.3)
No 11/23 (47.8) 10/37 (27.0) 21/60 (35.0)
Unknown 2/23 (8.7) 2/37 (5.4) 4/60 (6.7)
 If yes, other syndrome Yes 14/23 (60.9) 16/37 (43.2) 30/60 (50.0)
No 5/23 (21.7) 11/37 (29.7) 16/60 (26.7)
Unknown 4/23 (17.4) 10/37 (27.0) 14/60 (23.3)
Abnormal karyotype Yes 7 (9.0) 6 (8.0) 13 (8.5)
No 71 (91.0) 69 (92.0) 140 (91.5)