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

Question

Quizplus · Accepted Answer

Dehydration can cause an elevation in the hematocrit and a relative decrease in lung markings on a chest radiograph, leading to a normal chest radiograph in the setting of pneumonia. Early stage pneumonia may not always be apparent on a chest radiograph, and Pneumocystis jiroveci infection can present with a normal chest radiograph in up to 20% of cases. Klebsiella pneumonia, on the other hand, typically presents with a visible lobar pneumonia on a chest radiograph. Therefore, options 2 and 4 are correct, while options 1 and 3 are incorrect.

Which of the Following Clinical Conditions Are Often Associated with a Normal