Comparison has been made to previous MRI scans from 3 weeks earlier. Almost all of the previously demonstrated to the lesions have markedly reduced in size, with the exception of a white matter lesion in the posterior aspect of the left frontal lobe, which was present on previous scans, but has enlarged. It has the same appearances at the previous lesions (C-shaped enhancing rim, open towards the ventricle, central high T2 low T1 signal, which does not attenuate on FLAIR, and restricted diffusion at the enhancing rim). This lesion is immediately below the pre-central gyrus.