History: 24 yo female arriving at our local county hospital with SOB
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Answer: PCP (or now known as PJP) pneumonia.
Note the characteristic perihilar, symmetric reticular infiltrates (resembling non-cardiogenic edema). This was confirmed at bronchoscopy
Don’t forget that PCP pneumonia can have a NEGATIVE chest X-ray in 10-40% of patients. (as can ANY pneumonia!)