What features differentiate bacterial pneumonia from acute bronchitis and when should you obtain a chest X-ray?

• A. Pneumonia presents with fever, focal crackles, tachycardia, tachypnea; chest X-ray is indicated if focal findings, persistent fever, hypoxia, or high-risk patients.
• B. Bronchitis shows focal consolidation on exam.
• C. Chest X-ray should be obtained for all cases of cough.
• D. Pneumonia can only be diagnosed with imaging.

Answer: (A)