Objective : To compare the clinical characteristics of ordinary and severe coronavirus disease 2019 ( COVID-19 ) cases, so as to provide basis for the diagnosis, treatment and prognosis. Methods : We recruited 77 COVID-19 cases in Wenzhou Central Hospital from January 15 to February 29, 2020, collected their general information, clinical symptoms, laboratory test and CT scan results, and compared the clinical features of ordinary and severe cases. Results: There were 50 ordinary cases and 27 severe cases. The age, prevalence of hypertension and other baseline diseases of severe cases were higher than those of ordinary cases ( P<0.05 ) . The maximum body temperature during 1-3 days of hospitalization, proportion of body temperature rising, prevalence of cough, yellow phlegm, hemoptysis, chest tightness and shortness of breath of severe cases were higher than those of ordinary cases ( all P<0.05 ) . The proportion of pulmonary consolidation, glazing and patch shadow, the number of solid changes and the cumulative number of lesions of severe cases were higher than those of ordinary cases ( all P<0.05 ) . The values of LYM during 1-10 days of hospitalization, total T-lymphocyte percentage, CD4 count and percentage, CD8 count, Hb and oxygenation index of severe cases were lower than those of ordinary cases; while the values of LDH and NLR during 1-10 days of hospitalization, N8R, AST, ferritin, CRP during 1-7 days of hospitalization and D-dimer of severe cases were higher than those of ordinary cases ( all P<0.05 ). Conclusions Severe COVID-19 cases have older age, higher prevalence of baseline diseases, fever, shortness of breath symptoms, more lung consolidation and lesions, significantly decreased lymphocyte level ( especially CD4 ) , and increased LDH, NLR, ferritin and CRP.

Objective:To evaluate the imaging features of CT scan in patients with COVID-19.Methods:Clinical data of 56 patients with COVID-19 from January 17 to 19, 2020 admitted to Wenzhou Central Hospital and the Second Affiliated Hospital of Wenzhou Medical University were retrospectively reviewed. The clinical manifestations, lung imaging characteristics and treatment outcomes of patients with different severity were analyzed with SAS software.Results:Fever (92.8%, 52/56), dry cough (75.0%, 42/56) and asthenia (58.9%, 33/56) were the first symptoms in most of the patients; some patients also had shortness of breath (25.0%, 14/56) and pharyngeal pain (10.7%, 6/56). Chest high-resolution CT scan showed that in 42 moderate patients, ground glass-like high-density shadows in the lung were observed in 30 cases (71.4%) ; localized plaque consolidation shadows and bronchial inflation signs were observed in 10 cases (23.8%). In 12 severe patients, 11 had high-density patches involving multiple lung lobes (≥3). In 2 critically ill patients the patches and stripes involving the entire lung were observed; and cord-like high-density shadow, local consolidation and fibrosis were also shown.Conclusion:The multiple ground-glass changes outside the lungs are early imaging manifestations of COVID-19 patients. The increase in pulmonary lobe consolidation and fibrosis may indicate the disease progression, and the degree of lung consolidation and fibrosis is closely related to the disease severity.