Spontaneous Pneumomediastinum in a Patient with Coronavirus Disease 2019 Pneumonia and the Possible Underlying Mechanism

We read the article by Sun et al. (1) in the Korean Journal of Radiology with great interest concerning the computed tomography (CT) findings of coronavirus disease 2019 .The report demonstrated that mediastinal emphysema, giant bulla, and pneumothorax developed as complications of COVID-19 pneumonia during the course of the disease.Spontaneous pneumomediastinum seems to be rare in COVID-19.Here, we share our opinions on the possible mechanism underlying pneumomediastinum in COVID-19 pneumonia.Further, we report a case of spontaneous pneumomediastinum in a COVID-19 patient (Fig. 1) that was found to resolve on follow-up CT images at our hospital.