Table 2 Opacification defined as mucosal thickening, polyps, retention cysts and fluid level ≥1 mm in the right (R) and left (L) paranasal sinuses in 982 individuals (518 men and 464 women) on MRI

Mucosal thickening ≥1 mm in each sinus, n and ( % )

Men

154 (33.2)

147** (31.2)

125** (26.9)

125** (26.9)

47** (10.1)

57** (8.8)

115** (24.7)

129** (27.8)

49** (10.5)

37* (7.9)

Women

127 (24.5)

104 (20.0)

98 (18.9)

88 (16.9)

29 (5.5)

30 (5.7)

68 (13.1)

80 (15.4)

27 (5.2)

23 (4.4)

Mean mucosal thickening in each sinus (mm ± SD)

Men

3.32 ± 3.61

3.52 ± 4.01

1.96 ± 1.09

2.06 ± 1.24

1.80 ± 1.32

1.54 ± 1.01

2.19 ± 1.29

2.14 ± 2.1

2.40 ± 2.70

2.20 ± 2.19

Women

2.55 ± 2.23

2.75 ± 1.78

1.96 ± 1.11

1.78 ± 1.29

2.17 ± 1.39

1.56 ± 0.86

1.95 ± 1.15

1.68 ± 0.9

2.70 ± 2.10

2.20 ± 1.52

Polyps/retention cysts ≥1 mm in each sinus, n and ( % )

Men

123** (26.5)

118** (25.4)

14 (3.0)

11 (2. 3)

10 (2.1)

6 (1.2)

12 (2.5)

11 (2.3)

12 (2.5)

8 (1.7)

Women

85 (16.4)

79 (15.2)

8 (1.5)

8 (1.5)

1 (0.02)

5 (0.1)

9 (1.7)

7 (1.3)

12 (2.3)

6 (1.1)

Mean polyp/retention cyst diameter in each sinus (mm ± SD)

Men

8.16 ± 5.17

9.14 ± 6.26

4.28 ± 2.33

3.81 ± 2.04

5.00 ± 1.88

5.83 ± 1.72

5.41 ± 2.42

3.63 ± 0.9

6.00 ± 4.19

6.87 ± 4.45

Women

8.24 ± 6.81

7.05 ± 4.44

2.12 ± 0.64

3.00 ± 0.92

-

4.00 ± 2.23

3.55 ± 1.23

6.42 ± 4.2

5.16 ± 2.08

5.33 ± 2.33

Fluid ≥1 mm in each sinus, n ( % )

Men

8 (1.7)

14 (3.0)

1 (0.2)

1 (0.2)

1 (0.2)

1 (0.2)

1 (0.2)

4 (0.8)

4 (0.8)

Women

12 (2.3)

16 (3.0)

1 (0.2)

5 (1.0)

5 (1.0cps)

Mean fluid level in each sinus (in mm)

Men

-

-

-

-

-

-

Women

-

-

-

-

-

-