Pneumonia USMLE Step 1 Practice Question
A 42-year-old man from Wisconsin presents with a 3-week history of productive cough, fever (38.5°C), and 8-pound weight loss. He has verrucous skin lesions on his face and arms. Vital signs show BP 128/76, HR 92, RR 18, SpO2 98% on room air. Chest X-ray reveals nodular infiltrates in the right upper lobe. Sputum culture grows dimorphic yeast. He denies hemoptysis. Which organism is most likely responsible for this presentation?
Answer choices
- ATuberculosis
- BHistoplasma capsulatum
- CCoccidioides immitis
- DStaphylococcus aureus pneumonia
- EBlastomyces dermatitidisCorrect answer
- FCryptococcus neoformans
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