Which of the following clinical conditions are often associated with a normal chest radiograph in the patient with pneumonia?
1. Dehydration
2. Early infection
3. Klebsiella pneumonia
4. Pneumocystis jiroveci infection
a. 1, 2, and 4 only
b. 2 and 3 only
c. 1 only
d. 3 and 4 only
ANS: A
A normal chest x-ray film does not exclude the diagnosis of pneumonia. The chest radiograph may be normal in patients with early infection, dehydration, or P. jiroveci infection.
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