Pneumonia

Question 1

Aspiration PNA

Answer 1

Aspiration pneumonia occurs when a patient aspirates pharyngeal contents into the lungs. Often, this will occur in the setting of altered mental status and unconsciousness. Aspiration pneumonia generally arises from anaerobic bacteria.

Question 2

Interstitial PNA

Answer 2

Interstitial pneumonia is often characterized by diffuse interstitial infiltrates from fibrosis formation or infection. Interstitial lung disease can be idiopathic but can also arise from environmental exposures such as silicon and asbestos.