Analysis of CT Features of Novel Coronavirus Pneumonia with Clinical Ordinary Type

Objective:To investigate the CT features of novel coronavirus pneumonia with clinical ordinary type. Methods:Twenty-two patients, who were diagnosed through the clinical criteria for the diagnosis and treatment of novel coronavirus pneumonia(trial version 7), were examined by CT. CT findings of intrapulmonary lesions were evaluated and recorded, and then, based on the presence or absence of GGO, the number of cases with presence or absence of consolidation and the number of lesions(single or multiple) were listed separately, and based on the location of intrapulmonary lesions(subpleural area and non-subpleural area), the number of cases with or without GGO or consolidation was listed. Statistical analysis was performed by the means of χ² test. Results:There were 7 males and 15 females. There were 8 cases with single lesion and 14 cases with multiple lesions. GGO occurred in 19 cases(86.4%), consolidation in 15 cases(68.2%), and fibrotic appearance in 3 cases(13.6%). Crazy paving sign occurred in one case, slightly thickened bronchial walls in two cases, air small bronchogram signs in four cases, halo sign in one case. Lesions appeared in the the subpleural area of the lung in twenty-one cases(95.5%), and in the non-subpleural area of the lung in 6 cases(27.3%). In 14 patients with multiple lesions, bilateral lungs were involved, including 11 cases(50.0%) of the right upper lobe, 7 cases(31.8%) of the right lobe, 15 cases(68.2%) of the right lower lobe, and 15 cases of the left upper lobe(68.2%), 10 cases(45.5%) of the left lower lobe. Pulmonary involvement was found in 19 cases with grade Ⅰ(86.4%), 2 cases(9.1%) with grade Ⅱ, and 3 cases(4.5%) with grade Ⅲ. There was a small amount of pleural effusion in one case. There was a statistically difference between single and multiple groups with and without GGO(P=0.036), and there was a statistically difference between the two groups of the subpleural area and non-subpleural area in the aspects of the presence or absence of GGO and consolidation(P<0.001, P=0.010). Conclusion:CT features were diverse in NCP with clinical ordinary type, but there were still some characteristics on CT findings.