Fig 1.

Patterns of tumor growth in the PRMR examination in patients with glioblastoma. Axial contrast-enhanced T1-weighted images. A, No growth. The MR examination shows a thin homogeneous enhancement in the wall of the surgical cavity that is considered normal evolution after surgery. B, Focal growth. A focal-enhancing nodule is found at the anterior margin of the surgical cavity in this study (arrow). C, Global growth. Thick irregular enhancement in the margins of the surgical cavity involving more than half of the surgical cavity (arrows). Note the presence of some hyperintense postsurgical material in the surgical cavity. D, Distant growth. Focal contrast enhancement is found in the juxtaventricular parietal lobe and in the splenium of the corpus callosum (arrows), distant to the surgical cavity (not shown), after resection of a left temporal lobe glioblastoma.