Figure 1
From: MR imaging features of intracranial primary CNS lymphoma in immune competent patients
Axial T2WI, T1WI and contrast-enhanced T1WI as well as ADC and DWI maps show the classic appearance of PCNSL where the mass is isointense to mildly hypointense on T2WI and isointense on T1WI (relative to gray-matter) and shows predominantly solid, intense contrast enhancement (1a-1d). The mass is also in a typical distribution abutting a CSF-containing space (in the splenium of the corpus callosum abutting the lateral ventricles in this case). The mass is associated with extensive perilesional T2-hyperintensity. On ADC and DWI, the mass shows diffusion restriction.