Brain abscess

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Brain abscess

Microbiology

  • Nose/sinuses: Streptococcus spp (especially S. milleri), Haemophilus spp, Bacteroides spp, Fusobacterium spp
  • Teeth: Streptococcus spp, Bacteroides spp, Prevotella spp, Fusobacterium spp, Haemophilus spp
  • Ears: Enterobacteriaceae, Streptococcus spp, Pseudomonas aeruginosa, Bacteroides spp
  • Lungs: Streptococcus spp, Fusobacterium spp, Actinomyces spp
  • Urinary tract: Pseudomonas aeruginosa, Enterobacter spp
  • Penetrating head trauma: Staphylococcus aureus, Enterobacter spp, Clostridium spp
  • Neurosurgery: Staphylococcus spp, Streptococcus spp, Pseudomonas aeruginosa, Enterobacter spp
  • Endocarditis: Viridans streptococci, S. aureus
  • Congenital cardiac malformations (especially right-to-left shunts): Streptococcus spp
  • Plus anaerobes, which are common