Correct!
1. Aspergillus
Bronchoalveolar lavage was performed in a search for an infectious cause of the pneumomediastinum. This was negative for all infections and cytology revealed acute inflammation. The patient continued to decline and had video-assisted thoracotomy (VATS) performed (Figure 3).
Figure 3. Results from VATS lung biopsy demonstrating nonspecific acute and chronic inflammation but no organisms. Special stains were also negative for infection.
In this case which of the following is most likely the cause of the pneumomediastinum?