Fungal and Parasitic Infections USMLE Step 1 Practice Question
A 67-year-old man with chronic lung disease presents with progressive dyspnea and fever. High-resolution CT shows upper lobe nodules with cavitation. He has a 20-pack-year smoking history and spent childhood in Ohio near bird droppings. Histopathology shows small oval yeast within macrophages. Which of the following is the most likely diagnosis?
Answer choices
- AAspergillosis
- BBlastomycosis
- CCoccidioidomycosis
- DHistoplasmosisCorrect answer
- ECryptococcosis
- FTuberculosis
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