A 38-year-old man with untreated HIV (CD4 count 85/μL) presents with subacute fever, dry cough, and progressive dyspnea over 3 weeks. Vital signs show temperature 38.2°C, heart rate 102/min, respiratory rate 28/min, and oxygen saturation 88% on room air. Chest X-ray reveals diffuse bilateral interstitial infiltrates. Bronchoalveolar lavage with silver stain demonstrates characteristic cup-shaped cysts. He denies chest pain and has no focal consolidations on imaging. Which organism is the most likely diagnosis?
- A)Pneumocystis jirovecii pneumoniaGABARITO
- B)Histoplasmosis
- C)Legionella pneumonia
- D)Miliary tuberculosis
- E)Mycoplasma pneumonia
Explicação
Pneumocystis jirovecii pneumonia is correct. AIDS patients with low CD4 counts can develop opportunistic pneumonia characterized by fever, dry cough, dyspnea, diffuse bilateral interstitial or ground glass infiltrates, and silver stain positive cysts. Severe h... Ver explicação completa e trilha adaptativa →