Fungal and Parasitic Infections USMLE Step 1 Practice Question
A 32-year-old woman presents with progressive dyspnea, fever, and bilateral interstitial infiltrates on chest X-ray. She is HIV-positive with a CD4 count of 45 cells/μL and has not been on antiretroviral therapy. Bronchoalveolar lavage shows foamy exudate without organisms on standard stains. Which of the following is the most likely diagnosis?
Answer choices
- ACytomegalovirus pneumonitis
- BAspergillus fumigatus infection
- CCryptococcal pneumonia
- DHistoplasmosis
- EPneumocystis jirovecii pneumoniaCorrect answer
- FMycobacterium avium complex infection
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