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FIG 2. Toxoplasma encephalitis.
A, Coronal T1-weighted image with contrast shows heterogeneously enhancing mass in left frontoparietal region with surrounding edema. There is also edema in the right frontoparietal region related to an additional enhancing lesion (not shown).
B, Coronal thallium-201 SPECT shows no corresponding area of focally increased radiotracer uptake. This is most consistent with a nonmalignant, infectious etiology, which was proved to be toxoplasmosis by brain biopsy.
C, Follow-up coronal T1-weighted image, 10 days after antitoxoplasma therapy, shows the size of the enhancing left frontoparietal mass to have decreased and improved surrounding edema.
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