Evidence of previous craniotomy. The left frontal lobe lesion shows a gradual increase in size, the lesion is now measuring approximately 18 x 21 mm in axial dimension. A subtle area of enhancement is now evident within the anteromedial aspect of the lesion which has gradually become more apparent over this time and corresponds to an area of marginal increase in CBV. In all other respects the scan is unchanged throughout the remainder of the brain.
Conclusion: Increase in size with evidence of enhancement suggests an area of possible deterioration in grade within the lesion.