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Table 2 Comparison of various chest CT manifestations in COVID-19 and CAP patients

From: Differential diagnosis of coronavirus disease 2019 from community-acquired-pneumonia by computed tomography scan and follow-up

  COVID-19
n = 165
n (%)
CAP
n = 118
n (%)
χ2 P value
Pathological morphology and density
 Round ground glass shadow 53(32.1%) 2(1.7%) 40.68 < 0.001
 Small ground glass shadow 35(21.2%) 27(22.9%) 0.11 0.74
 Large ground glass shadow 23(13.9) 13(11.0%) 0.53 0.47
 Large and small mixed ground glass shadow 18(10.9%) 5(4.2%) 4.1 0.04
 Ground glass shadow and solid shadow 11(6.7%) 7(5.9%) 0.20 0.66
 Small patch consolidation 12(7.3%) 31(26.3%) 19.27 < 0.001
 Large and small mixed patch consolidation 13(7.9%) 33(28.0%) 0.40 0.53
Other imaging signs
 Lesion wandering 22(13.3%) 3(2.5%) 9.05 0.002
 Fibrous tissue 5(3.03%) 68(57.6%) 107.14 < 0.001
 Air bronchgram 52(3.2%) 46(39.0%) 1.69 0.19
 Bronchial wall thickening 18(10.9%) 37(31.4%) 18.37 < 0.001
 Crazy paying pattern 54(32.7%) 34(28.8%) 0.49 0.48
 Pulmonary cavity 0 12(10.2%) 17.52 < 0.001
 Lung bullae 0 8(6.8%) 11.51 < 0.001
Distribution
 Central 17(10.3%) 22(18.6%) 4.03 0.04
 Peripheral 99(60.0%) 62(52.5%) 1.56 0.21
 Central + Peripheral 49(29.7%) 34(28.8%) 0.03 0.87
Numbers of lobes and lesions involved
 Single leaf single shot 48(29.1%) 17(14.4%) 8.38 0.03
 Single leaf multiple occurrence 12(7.3%) 9(7.6%) 0.01 0.91
 Multilobed multiple lesions 105(63.6%) 92(78.0%) 6.68 0.01
Other chest diseases
 Enlargement of heart shadow 1(0.6%) 5(4.2%) 4.37 0.04
 Lymphadenopathy 1(0.6%) 18(15.3%) 23.57 < 0.001
 Pleural effusion 3(1.8%) 26(22.0%) 30.57 < 0.001
 Pleural thickening 2(1.2%) 31(26.3%) 41.94 < 0.001