Case Author(s): Daniel Appelbaum, MD and Farrokh Dehdashti, MD , 5/8/00 . Rating: #D3, #Q4

After viewing the image(s), the Full history/Diagnosis is available by using the link here or at the bottom of this page

Brief history:

29 year old HIV positive female with a past history of CNS toxoplasmosis now presents with new onset seizures.


Selected axial and coronal MR images are shown. What is your differential diagnosis? How could you further distinguish between benign and malignant etiologies?

View main image(mr) in a separate viewing box

View second image(pb). Axial images from a brain PET study.

View third image(pb). Same axial images, for those who prefer color-scale.

View fourth image(mc). Corresponding MR and PET images.

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