Ill-defined lucency in the left lower hemithorax with poor visualization of the left hemidiaphragm and linear lucency in the left chest wall, raising suspicion for possible subcutaneous emphysema or skin fold. These findings may be consistent with a left basilar pneumothorax in the supine position. Clinical correlation and additional imaging with right lateral decubitus views are recommended if clinically indicated.
Subcutaneous Emphysema (Uncertain) Simple pneumothorax (Uncertain)