Mycology/Parasitology USMLE Step 1 Practice Question
A 45-year-old man from the San Joaquin Valley presents with a 6-week history of chronic cough and pleuritic chest pain. Vital signs show temperature 38.2°C, blood pressure 128/82 mmHg, heart rate 92/min, respiratory rate 18/min, and SpO2 98% on room air. Physical examination reveals erythema nodosum on bilateral shins. Chest X-ray demonstrates hilar lymphadenopathy with patchy infiltrates. Serum complement fixation antibodies are positive. He denies recent antifungal use. Which organism is most likely responsible?
Answer choices
- ABlastomycosis
- BHistoplasmosis
- CTuberculosis
- DCoccidioidomycosisCorrect answer
- EAspergillosis
- FCryptococcosis
See the full explanation
Get the correct-answer rationale, why each distractor is wrong, the underlying mechanism, and high-yield associations — plus adaptive practice that targets your weak areas — with a free MedBoardPRO account.