Department of Radiology The First Clinical Medical College of Zhejiang Chinese Medical University Hangzhou 310053 Zhejiang Province China;
Department of Radiology The First Affiliated Hospital of Zhejiang Chinese Medical University Hangzhou 310006 Zhejiang Province China;
Department of Radiology The First Affiliated Hospital of Zhejiang Chinese Medical University Hangzhou 310006 Zhejiang Province China;
Department of Radiology Central Hospital of Wuhan Tongji Medical College Huazhong University of Science and Technology Wuhan 430014 Hubei Province China;
Department of Radiology The First Affiliated Hospital of Zhejiang Chinese Medical University Hangzhou 310006 Zhejiang Province China;
Aging; Spontaneous pneumomediastinum; COVID-19; SARS; Case report;