CEREBRAL MR-IMAGING IN INTRAVASCULAR LYMPHOMATOSIS

MR imaging data were reviewed retrospectively in four male patients (3 2 to 74 years old) with histologically confirmed intravascular lymphom atosis (IVL), a rare, aggressive form of non-Hodgkin lymphoma. MR find ings included infarct-like lesions (n = 2), focal parenchymal enhancem ent (n = 3), dural/arachnoid enhancement (n = 2), and, in one case, no nspecific, patchy foci of increased signal in the white matter on long -TR images, All patients had multifocal lesions. Knowledge of the spec trum of MR imaging features in this unusual disorder may aid in diagno sis and potentially enhance the role of imaging in following response to therapy.