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Figure 3: A 49-year old female patient, who was operated for an oligodendroglioma, grade II, followed by concurrent chemotherapy (temazolamide), which was stopped after 9 months, presented with weakness of extremities, left > right. She was on clobazam and phenytoin at the time of imaging. F-18 FDG PET/CT images (a-transverse, b-sagittal, c-coronal) done for restaging of the disease showed non-FDG avid ill-defined hypodensity in the right frontal cortex, which may be due to post radiation/treatment sequel or residual disease. Subsequent F-18 fluorocholine PET/CT (d-axial, e-sagittal, f-coronal) showed tracer avidity (SUVmax 5.2) in the periphery of the irregular, iso-hypodense lesion in the right frontal cortex, suggesting a recurrent disease

Figure 3: A 49-year old female patient, who was operated for an oligodendroglioma, grade II, followed by concurrent chemotherapy (temazolamide), which was stopped after 9 months, presented with weakness of extremities, left > right. She was on clobazam and phenytoin at the time of imaging. F-18 FDG PET/CT images (a-transverse, b-sagittal, c-coronal) done for restaging of the disease showed non-FDG avid ill-defined hypodensity in the right frontal cortex, which may be due to post radiation/treatment sequel or residual disease. Subsequent F-18 fluorocholine PET/CT (d-axial, e-sagittal, f-coronal) showed tracer avidity (SUVmax 5.2) in the periphery of the irregular, iso-hypodense lesion in the right frontal cortex, suggesting a recurrent disease