Purpose

To investigate the chest CT imaging characteristics and clinical manifestations of patients with COVID-19 pneumonia.

Methods

This study included 150 patients with COVID-19 pneumonia diagnosed from January 10 to February 12, 2020 to analyze their clinical and CT imaging characteristics.

Results

The period between symptom onset and initial CT examination ranged from 1 to 8 days. There were 83 cases (55.33%) involving both lungs, 67 cases (44.67%) involving a single lung (left 25 cases and right 42 cases). There were 49 cases (32.67%) of single intrapulmonary lesion, 33 cases (22.00%) of multiple intrapulmonary lesions, 68 cases (44.00%) of diffused intrapulmonary lesions, 67 cases (44.67%) of subpleural lesions, 24 cases (16.00%) of lesions localizing along the bronchovascular bundles, and 59 cases (39.33%) with lesions in both locations. There were 18 cases (12.00%) exhibiting ground-glass nodules of < 10 mm, 124 cases (82.67%) of patchy ground-glass opacities with or without consolidation, 8 cases (5.33%) of cord-like lesions, 6 cases (4.00%) of pleural effusion, and 2 cases (1.33%) of enlarged lymph nodes.

Conclusions

The main manifestations of initial chest CT in COVID-19 pneumonia patients was ground-glass opacities, commonly involving single site in patients < 35 years old and multiple sites and extensive area in patients > 60 years old. The common lesion sites were the subpleural region and the posterior basal segments of the lower lobes, mostly showing thickening of the interlobular septum and mixed with consolidation.

中文翻译：

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COVID-19肺炎患者初次胸部CT影像学特征及临床表现。

目的

探讨COVID-19肺炎患者的胸部CT影像学特征及临床表现。

方法

本研究纳入了 2020 年 1 月 10 日至 2 月 12 日确诊的 150 名 COVID-19 肺炎患者，以分析他们的临床和 CT 影像学特征。

结果

症状出现和初次 CT 检查之间的时间间隔为 1 至 8 天。双肺83例（55.33%），单肺67例（44.67%）（左侧25例，右侧42例）。单发肺内病变49例（32.67%），多发肺内病变33例（22.00%），肺内弥漫性病变68例（44.00%），胸膜下病变67例（44.67%），24例（16.00%） ) 沿支气管血管束定位的病灶，59 例 (39.33%) 病灶同时位于两个位置。18例（12.00%）磨玻璃结节<10 mm，124例（82.67%）斑片状磨玻璃影伴或不伴实变，8例（5.33%）条索样病变，6例（ 4.00%)胸腔积液，2例(1.33%)淋巴结肿大。

结论

COVID-19肺炎患者初次胸部CT主要表现为磨玻璃样阴影，<35岁患者多见于单部位，>60岁患者多部位、范围广泛。常见病变部位为胸膜下区和下叶后部基底段，多表现为小叶间隔增厚并混有实变。