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Streptococcus anginosus abscesses (MRI)

These mass lesions are hyperintense on T2-weighted image (A) and hypointense on T1-weighted image (B) with associated ring enhancement post-gadolinium injection. Note that due to its high purulence, there is prominent diffusion restriction on diffusion-weighted image (C) with ADC correlate (D). (Contributed by Dr. Lama Abdel Wahed.)

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Associated Disorders

  • Encephalitis
  • Meningitis
  • Myelitis
  • Space-occupying, rim enhancing lesions