Findings, case of 36 y/o woman, new onset seizures

Imaging Findings

Initial non-contrast T1-weighted MRI shows a large, heterogeneous, hypointense mass in the white matter of the right temporal lobe and extending into the parietal and occipital lobes. The lower signal area within the mass suggests tissue necrosis (arrow).

On T2-weighted MRI, the mass is much brighter than the surrounding tissue. The mass appears larger than on T1 because the surrounding edema is also high intensity on T2. There is effacement of the right temporal horn and a mild midline shift to the left (arrow).

A second T1-weighted MRI nine months later shows, again, the large mass with slightly more mass effect and midline shift. No enhancement with gadolinium-DTPA is seen in this study.

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