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Left frontal lobe lesion on axial slices.
Similar signal to CSF on DWI and FLAIR.
The patient was referred for evaluation of seizures of six years duration. MR images revealed a well defined cystic lesion 1.8 x 1.3 cm in left frontal lobe. There was peripheral gliotic changes. The lesion was intra axial and showed signal changes similar to CSF in all pulse sequences.