Fig. 2.

Transversal slides of 2 different CT scans of patient 3, obtained before (2A, 2B) and after (2C, 2D) occurrence of the pneumothorax with 2 weeks in between. Note: the presented slides represent different anatomic landmarks, but the presented lung coupes represent the same area due to shifting of the lung by the pneumothorax. 2A: Severe ground glass opacities (GGO) congruent with COVID-19. 2B: A pre-existent bulla observed in the middle lobe. Pleural effusion is present. 2C: The subsequently performed CT scan shows pneumothorax, atelectasis and subcutaneous emphysema. In comparison to Fig. 2A, progressive fibrotic reaction with honeycombing formation is seen after diminution of the GGO. 2D: Newly formed bullae are present laterobasally in the right lower lobe. Intercostal thorax tube in situ.