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Brain abscess

Brain abscess is a topic covered in the Guide to Diagnostic Tests.

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Organism

Brain abscess

Often polymicrobial (14–28% of cases).

Child: anaerobes (40%), aerobic and anaerobic viridans streptococci (GPC in chains), S. aureus (GPC), S. pneumoniae (GPDC), S. pyogenes (GPC in chains); less common: Enterobacteriaceae (GNR), P. aeruginosa (GNR), H. influenzae (GNCB), N. meningitidis (GNDC).

Adults: Viridans streptococci (anaerobic Streptococcus anginosus [ milleri] group) (70%).

Enterobacteriaceae (GNR) (23–33%), S. aureus (GPC) (10–15%), N. meningitidis , Listeria sp., anaerobes (20–40%) including bacteroides (GNR), prevotella (GNR), fusobacterium (GNR), eubacterium (GPR), and propionibacterium (GPR). More rarely identified: S. pneumoniae , Rhodococcus sp., Group B streptococci (GPC in chains), nocardia (GPR), actinomyces (GPR), parasites, T. solium (cysticerci), Entamoeba histolytica , Schistosoma sp., and fungi (1%).

Immunocompromised: T. gondii, Cryptococcus neoformans, nocardia (GPR), Listeria sp. (GPR), mycobacteria (AFB), Aspergillus sp., C. albicans , coccidioides, Zygomycetes (mucor, rhizopus), E. histolytica.

Posttraumatic: S. aureus (GPC), viridans streptococci (GPC in chains), Enterobacteriaceae (GNR), coagulase-negative staphylococci (GPC), Propionibacterium acnes (GPR).

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Citation

McPhee, Stephen J., et al. "Brain Abscess." Guide to Diagnostic Tests, 7th ed., McGraw-Hill Education, 2017. Medicine Central, im.unboundmedicine.com/medicine/view/GDT/619301/all/Brain_abscess.
McPhee SJ, Lu CM, Nicoll D. Brain abscess. Guide to Diagnostic Tests. 7th ed. McGraw-Hill Education; 2017. https://im.unboundmedicine.com/medicine/view/GDT/619301/all/Brain_abscess. Accessed March 22, 2019.
McPhee, S. J., Lu, C. M., & Nicoll, D. (2017). Brain abscess. In Guide to Diagnostic Tests. Available from https://im.unboundmedicine.com/medicine/view/GDT/619301/all/Brain_abscess
McPhee SJ, Lu CM, Nicoll D. Brain Abscess [Internet]. In: Guide to Diagnostic Tests. McGraw-Hill Education; 2017. [cited 2019 March 22]. Available from: https://im.unboundmedicine.com/medicine/view/GDT/619301/all/Brain_abscess.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - Brain abscess ID - 619301 A1 - McPhee,Stephen J, AU - Lu,Chuanyi Mark, AU - Nicoll,Diana, BT - Guide to Diagnostic Tests UR - https://im.unboundmedicine.com/medicine/view/GDT/619301/all/Brain_abscess PB - McGraw-Hill Education ET - 7 DB - Medicine Central DP - Unbound Medicine ER -