PMC8580730_01
Axial and coronal chest CT images showing the extent of pneumomediastinum and the cardiac shift "in progress," SP and following the main bronchi toward cardiac apex. SP, Spontaneous pneumomediastinum.
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On the same day, spontaneous and severe pneumomediastinum with extensive cervical subcutaneous emphysema and cardiac shift was observed on chest CT ( Fig. 1 ).
Axial and coronal chest CT images after mediastinotomy. Pneumomediastinum almost resolved.
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This procedure performed on the 12 th day after ICU admission was effective in terms of clinical and iconographic improvement ( Fig. 2 ); the patient was able to be withdrawn gradually from supportive drugs and chest tube in 24 hours. 
PMC8580730_02
Axial and coronal chest CT of the second patient with SARS-CoV-2 pneumonia complicated b
y spontaneous pneumomediastinum
. SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.
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The clinical course worsened, chest CT-scanner was performed and showed spontaneous pneumomediastinum (SP) ( Fig. 3 ).
Follow-up axial and coronal chest CT at 2 months after initial presentation showing complete resolution of pneumomediastinum.
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