CTICasesParagonimus Infection
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Imaging findings
Chest CT showed an apical, ill-defined nodule with surrounding consolidation and low attenuation, described as caseous.
Key takeaways
This case highlights Paragonimus infection, a parasitic lung fluke, as an important differential for apical lung lesions, especially in immigrants from endemic areas. It is acquired by ingesting freshwater crabs and crayfish. The diagnosis was confirmed by finding ova on bronchoscopy and PCR, distinguishing it from tuberculosis, which it often mimics clinically and radiographically.
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