Mycology/Parasitology USMLE Step 1 Practice Question
A 28-year-old male gardener presents with a 3-week history of progressive linear nodules and draining ulcers along his forearm following a rose thorn puncture injury. Vital signs: BP 118/76, HR 88, RR 16, Temp 37.2°C, SpO2 98%. Physical examination reveals no proximal lymphadenopathy. Chest X-ray is normal. Culture of drainage grows a thermally monomorphic fungus. Which of the following is the most likely diagnosis?
Answer choices
- ACoccidioidomycosis caused by Coccidioides immitis
- BBlastomycosis caused by Blastomyces dermatitidis
- CSporotrichosis caused by Sporothrix schenckiiCorrect answer
- DTularemia caused by Francisella tularensis
- EHistoplasmosis caused by Histoplasma capsulatum
- FChromoblastomycosis caused by Fonsecaea pedrosoi
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