This 35 year old man began having
headaches eight months previouslsy. A CT scan was unremarkable. Two months
prior to the current studies, he underwent brain biopsy, after progressive
symptoms led to MR imaging. A low grade glioma was found, and he was treated
with radiation. The MR demonstrates an area of mixed signal intensity on proton
density(PD) and T2-weighted(T2) images in a left occipital region. Contrast
enhancement shows the lesion to contain cystic elements. Thallium images show
an anterior border of high uptake, consistent with a small region of tumor
recurrence.
