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PNEUMOCYSTIS PNEUMONIA (PCP)

“ Fungal infection, the most common opportunistic infection. Plain film •   May be normal. •   Look for diffuse, bilateral airspace opacific...

Fungal infection, the most common opportunistic infection.
Plain film
•  May be normal.
•  Look for diffuse, bilateral airspace opacification.
•  Check for a pneumothorax—this would be nearly pathognomic for PCP in the right setting.
CT
•  Diffuse, ground-glass pattern of airspace opacification (most typical) with or without reticulation.
•  Upper lobe cysts are common and prone to pneumothorax.
•  No lymph node enlargement or pleural effusion.
Pneumocystis pneumonia. Computed tomography image demonstrating diffuse, bilateral ground-glass opacification.