PMC3995395_01
T2-weighted MRI revealed a distinct tiger-striped appearance with abnormally oriented folia in the left cerebellar hemisphere, extending to the vermis.
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F1
MRI revealed a regrowing mass lesion with an abnormal laminated pattern of cortical architecture in the left cerebellar hemisphere, extending to the vermis (fig. 1).
The cerebellar lesion exhibited a hyperperfusion on blood flow imaging (upper left) and a hypermetabolism on the metabolic rate of oxygen imaging (upper right), respectively, on 15O-gas PET. 99mTc-ECD (lower left) and 123I-iomazenil (lower right) SPECT show hyperactivity and a defect in the uptake of the lesion.
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F2
In the cerebellar region, increases in both blood flow and metabolic rate of oxygen were detected on 15O-gas PET imaging (fig. 2). While the lesion exhibited hyperactivity on 99mTc-ECD SPECT imaging, where the contrast was similar to that of blood flow PET imaging, 123I-iomazenil SPECT showed a defect in uptake within the lesion (fig. 2).