ABSTRACT
Figure 4.139 Primary CNS lymphoma. T2-weighted MRI axial image shows hyperdense mass straddling the midline posterior to the third ventricle in the region of the splenium of the corpus callosum. Note the perilesional white matter edema. This is typical of classical primary central nervous system lymphoma
Figure 4.140 Primary cerebral lymphoma. Coronal section of cerebrum immediately posterior to the corpus callosum splenium shows an ill-defined diffusely infiltrating tumor adjacent to the right lateral ventricle. Primary cerebral lymphomas are often multiple, periventricular and ill-defined
malformation, especially if they have bled or been treated surgically (Table 4.12).
