This document summarizes a clinical case of a 58-year-old woman admitted with sudden onset breathlessness and facial swelling. On examination, the facial swelling was found to be due to subcutaneous emphysema. Chest X-ray findings included subcutaneous emphysema, pneumomediastinum, pneumothorax, emphysematous bullae, and bronchiectasis. CT chest confirmed pneumomediastinum, pneumothorax, emphysematous bullae. The document further describes typical radiological findings of pneumomediastinum on CXR and distinguishes findings of bullae versus pneumothorax.

3. CXR PA VIEW

5. Bullae with a septa within it Pneumomediastinum Air under heart

9. BULLAE Inner margin that is concave

10. PNEUMOTHORAX DEEP SULCUS Curvilear convex line Absent lung markings