Figure 1.

A 22-year-old male patient diagnosed with atypical extraventricular neurocytoma, undergoing treatment for pneumocystosis, who evolved to severe hypoxemia complicated by possible bronchial aspiration. A: Chest CT scan showing extensive pneumomediastinum with a tension aspect, dissecting the mediastinal fat planes and exerting a compressive effect on both lungs. B: Percutaneous CT-guided drainage was performed as an emergency procedure, under general anesthesia, with insertion of a 14F Wayne drainage catheter through the left anterior chest wall, with immediate reduction of the pneumomediastinum and lung reexpansion.