This is likely a case of re-expansion pulmonary edema following an evacuation of a spontaneous pneumothorax. Relatively rapid resolution of pulmonary findings on CT with reduction of pneumothorax is what favors re-expansion edema rather than pulmonary hemorrhage or contusion. 

Key learning points:

• Re-expansion pulmonary edema is a rare but potentially life-threatening complication of pneumothorax re-expansion and thoracocentesis procedures.
• Despite being more common in individuals age 20-39 ¹, it may occur in patients over the age of 40.

Co-Authors:

1. Roger Rozzi, DO
2. Saud Ahmed, MD
3. David Gabbert, DO
4. Brittany Cloud, DO