FIG 3.

Long-term enhancement and diffusion restriction of a lesion during 31 months of follow-up in a 55-year-old woman. 3D-T1-weighted Gd and diffusion-weighted images acquired at baseline (A) show a punctiform enhancing lesion on the right with subtle diffusion restriction (white arrows), and after 31 months (B), the images show that the lesion migrates to the right ventricle (white arrows). The lesion is now linearly enhancing with partial rim enhancement and diffusion restriction (ADC with low values is not shown).