Pneumocystis jiroveci pneumonia PCP

• Facts:
  P. jiroveci is an opportunistic pathogen
  Usually occurs when CD4+ count < 200/mL
  
• History / PE:
  Dyspnea on exertion
  Fever
  Non-productive cough
  Impaired oxygenation
• Diagnosis:
  Diffuse, bilateral interstitial infiltrates
  Diagnosed by cytology
  
• Treatment:
  Bactrim X 21 days + prednisone (hypoxemia)
  Pentamidine X 14 days (if sulfa allergy)
• Associated With:
  Immunocompromised hosts
  HIV/AIDS
  
• Differential Diagnosis:
  Tuberculosis
  Histoplasmosis
  Coccidiomycosis