CTICasesChronic Cavitary Pneumocystis Pneumonia
Imaging findings
CT chest in an HIV-positive patient shows progressive, coalescing ground-glass opacities, thick-walled cavitary lesions, and consolidation in the middle and lower lobes, representing chronic, atypical Pneumocystis jirovecii pneumonia (PJP) with suspected Mycobacterium avium co-infection.
Key takeaways
While PJP classically presents with diffuse, symmetric ground-glass opacities, atypical presentations can occur. In patients with chronic or untreated AIDS, PJP can present with dense consolidation, cavitation, or large mass-like opacities, often complicated by atypical mycobacterial co-infections.
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