A 34-year-old man comes to the physician because of a one-week history of shortness of breath, non-productive cough, malaise, and fever. Three months ago, he received a bone marrow transplant. His vitals are: temperature 102.1F, HR 74, RR 22, BP 110/80. Auscultation of the chest shows generalized crackles across both lung fields. CXR shows bilateral interstitial infiltrates. A lung biopsy is shown above. What’s the most likely diagnosis?
DNA virus
Fungus
Gram-negative bacterium
Gram-positive bacterium
RNA virus
—
Cut-to-the-chase Answer (0:30):
—
HY USMLE Answer (4:03):
