How long do toxoplasmic encephalitis CT scanning and MRI abnormalities persist?

Updated: Mar 08, 2019
  • Author: Murat Hökelek, MD, PhD; Chief Editor: Michael Stuart Bronze, MD  more...
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CT scanning abnormalities improve after 2-3 weeks of treatment in approximately 90% of patients with AIDS who have toxoplasmic encephalitis. Complete resolution takes 6 weeks to 6 months; peripheral lesions resolve more rapidly than do deeper ones.

Smaller lesions usually resolve completely within 3-5 weeks as shown on MRI, but lesions with a mass effect tend to resolve more slowly and leave a small residual lesion.

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