From: Diagnostic accuracy of oblique chest radiograph for occult pneumothorax: comparison with ultrasonography
Occult pneumothorax size (n = 70)
Minuscule
Anterior
Anterolateral
n = 19
n = 32
Oblique X-ray sensitivity (%)
15.8
68.8
94.7
Lung US sensitivity (%)
10.5
75.0
p
0.63
0.59
1.0
Need for chest tube (%)
40.6
89.5