Fungal and Parasitic Infections USMLE Step 1 Practice Question
A 46-year-old male gardener presents with a painless papule on the index finger that ulcerated over one week, followed by several nodules in a linear pattern along the forearm's lymphatic channels. Vital signs: BP 128/82 mmHg, HR 82 bpm, RR 16, Temp 37.2°C, SpO2 98%. Lymph node biopsy shows oval yeast within macrophages. He denies fever or systemic symptoms. Which organism most likely caused this sporotrichoid infection?
Answer choices
- ABartonella henselae
- BStaphylococcus aureus
- CFrancisella tularensis
- DMucor species
- ESporothrix schenckiiCorrect answer
- FLeishmania braziliensis
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