What radiographic pattern is most typical of bacterial pneumonia in dogs, and how would you differentiate it from edema or atelectasis?

What radiographic pattern is most typical of bacterial pneumonia in dogs, and how would you differentiate it from edema or atelectasis?

• A. Alveolar infiltrates that are focal to multilobar, often cranioventral; edema is perihilar/ caudodorsal; pneumonia shows air bronchograms.
• B. Diffuse interstitial pattern; edema; none.
• C. Cavitary lesions in the periphery.
• D. No radiographic changes.

Answer: (A)