Can intravascular lymphomatosis mimic sinus thrombosis? A case report with8 months' follow-up and fatal outcome

We report a case of intravascular lymphomatosis of the brain with 8 months' follow-up and fatal outcome. Several MRI investigations revealed variegate d, rapidly changing infarct-like lesions and invasion of the walls of the s uperior sagittal sinus and deep veins. When disturbances of the venous outf low are detected with multifocal infarct-like lesions, intravascular lympho matosis should be considered in the differential diagnosis. Brain biopsy ma y ensure the proper diagnosis ante mortem, but failure of biopsy is frequen t, as in our case.