Presentation
Diagnosed with irregular heart sounds. Normal on exam today, but noted to have diminished AE in the left lower lung base. Oxygen levels 97% at rest. Odd episodes of cough, lateral flow test negative, organizing a formal covid test now. No creps heard on the left base. Symptoms of breathlessness on exertion and fatigue. Collapse or any evidence of PE or covid involvement?
Patient Data

Large left sided pneumothorax with total collapse of the left lung. Minor mediastinal shift.
Heart size normal. Right lung clear.
Case Discussion
A large spontaneous pneumothorax, which was promptly managed by insertion of a pleural drain.