Fig. 2From: Patterns of relapse in primary central nervous system lymphoma: inferences regarding the role of the neuro-vascular unit and monoclonal antibodies in treating occult CNS diseaseCase 2; Axial T1-weighted post contrast imaging at initial presentation (a, b) and relapse (c, d). Initial presentation shows a localized large enhancing lesion centered in the genus of the corpus callosum (CC) with extension mainly into the right frontal lobe (a, b). After 10 months of HD-MTX treatment there is relapse in the ependymal surface of the left lateral ventricle (d) with complete response in the CC lesion (c)Back to article page