The broad categories of infectious diseases that affect the central nervous system (CNS) continue to present diagnostic challenges. Although imaging patterns of disease are well established, overlap between categories can occur. For example, the differentiation of cysticercosis, a parasitic infection from a tuberculous (TB) abscess, a bacterial infection, can be difficult. Additional challenges are posed by the increasing probability of encountering nonendemic pathogens secondary to the globalization of infections brought on by the expansion of international travel, transportation, and immigration. Additionally, increasing numbers of patients are undergoing treatments and therapies that compromise the immune system, leading to altered host responses that no longer express the expected patterns of tissue injury.


West Nile Virus Progressive Multifocal Leukoencephalopathy Prion Protein Prion Disease Brain Abscess 
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Copyright information

© Springer-Verlag Italia 2012

Authors and Affiliations

  • David J. Mikulis
    • 1
    • 2
  1. 1.Medical ImagingThe University of Toronto, The University Health NetworkTorontoCanada
  2. 2.The Toronto Western HospitalTorontoCanada

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