Actinomycosis Actinomyces israelii

• Facts:
  Filamentous, anaerobic gram positive organism
• History / PE:
  Cervicofacial, thoracic, abdominal disease
  Sinus tract involvement
  Infected area drains yellow fluid
• Diagnosis:
  Sulfur granules
• Treatment:
  High dose penicillin G for 6-12 weeks
• Differential Diagnosis:
  Tuberculosis
  Nocardiosis (aerobic)
  Mucormycosis (necrotic turbinates)