Table 2 Comparison of CT imaging features between pneumonic-type IMA and infectious pneumonia
Characteristics | Pneumonic-type IMA (n = 134) | Infectious pneumonia (n = 207) | p value |
|---|---|---|---|
Location | 0.176 | ||
Unilateral | 90 (67.2) | 124 (59.9) | |
Bilateral | 44 (32.8) | 83 (40.1) | |
Margin | 0.159 | ||
Well-defined | 25 (18.7) | 27 (13.0) | |
Ill-defined | 109 (81.3) | 180 (87.0) | |
Air bronchogram | 0.016 | ||
Absent | 25 (18.7) | 34 (16.4) | |
Regular | 41 (30.6) | 95 (45.9) | |
Irregular | 68 (50.7) | 78 (37.7) | |
Interlobular fissure bulging | 0.017 | ||
Absent | 109 (81.3) | 187 (90.3) | |
Present | 25 (18.7) | 20 (9.7) | |
Air space | < 0.001 | ||
Absent | 46 (34.3) | 145 (70) | |
Present | 88 (65.7) | 62 (30.0) | |
Satellite lesions | 0.046 | ||
Absent | 108 (80.6) | 183 (88.4) | |
Present | 26 (19.4) | 24 (11.6) | |
Pleural effusion | 0.234 | ||
Absent | 80 (59.7) | 110 (53.1) | |
Present | 54 (40.3) | 97 (46.9) | |
Lymphadenopathy | 0.710 | ||
Absent | 90 (67.2) | 143 (69.1) | |
Present | 44 (32.8) | 64 (30.9) | |
CT attenuation value, HU | 25.9 ± 7.1 | 32.3 ± 5.1 | < 0.001 |