Table 1.
Characteristic of the participants in the included studies
| Author/year | Study design | Participants (n) | Age (Y) | Gender | Smoking | |
|---|---|---|---|---|---|---|
| Overall | MT | |||||
| Ritter et al./2020 [30] | Retrospective | 145 sinuses |
55 MT (> 2 mm) 19 Cyst/Polyp 5 Sinus opacification 10 Ostium obstruction |
18–94 |
82 F 63 M |
31 (21%) |
| Küçükkurt/2019 [26] | Retrospective |
88 115 sinuses (27 bilateral, 61 unilateral) |
43 27 MT (≥ 3 mm) 35 sinuses\ 16 Peseudocyst (17 sinuses) |
30–73 |
34 F 54 M |
47 (53.4%) |
| Gong et al./2019 [23] | Retrospective | 92 | 19 MT (> 2 mm) | 44–48 |
38 F 54 M |
NR |
| Najm et al./2018 [28] | Retrospective |
13 14 sinuses |
2 MT (> 2 mm) 1 in a smoker | 38–69 | 13 F | 2 (15%) |
| Chen et al./2017 [22] | Prospective | 84 |
19 Solitary polyps or cysts 17 MT 6 Fluid accumulation 1 Near-total opacification 2 Calcification spots |
Average: 48.8 |
29 F 55 M |
16 (19%) |
| Qin et al./2017 [29] | Prospective | 100 |
28 13 Flat thickening 15 Pseudocyst |
20–80 |
47 F 53 M |
19 (19%) |
| Maska et al./2017 [27] | Retrospective | 29 |
6.9% Minimal thickening (> 1 mm but ≤ 2 mm) 20.7% Moderate thickening (> 2 mm but ≤ 5 mm) 65.5% Severe thickening (> 5 mm) |
NR |
11 F 18 M |
NR |
| Kfir et al./2014 [25] | Retrospective | 16 | 16 | 26–64 |
7 F 9 M |
4 (25%) |
| Kayabasoglu et al./2014 [24] | Retrospective |
94 145 sinuses (51 bilateral, 43 unilateral) |
94 | 29–71 |
32 F 62 M |
NR |
| Garcia et al./2013 [14] | RCT | 104 (135 sinuses) |
58 (> 2 mm) 3 mucosal cyst |
39–81 |
58 F 46 M |
30 (27.8%) |
MT Mucosal thickening, F Female, M Male, Y Years, NR Not reported