A 28-year-old man from the Mississippi River valley presents with fever, cough, and progressive pulmonary infiltrates. Blood cultures and sputum cultures grow a dimorphic fungus that appears as small yeast cells in macrophages at body temperature but as mold with tuberculate spores in culture at room temperature. Which of the following is the most likely organism?
- A)Aspergillus fumigatus
- B)Cryptococcus neoformans
- C)Blastomyces dermatitidis
- D)Histoplasma capsulatumGABARITO
- E)Coccidioides immitis
Explicação
Histoplasma capsulatum is endemic to the Ohio and Mississippi River valleys. It is a dimorphic fungus: at 37°C it forms small intracellular yeasts in macrophages; at 25°C it grows as mold with characteristic tuberculate (spiky) macroconidia. Geographic distrib... Ver explicação completa e trilha adaptativa →