What is neoplastic vasculitis?
Neoplastic vasculitis is a rare condition that refers to inflammation of the brain arteries resulting from direct invasion of neoplastic cells, as opposed to paraneoplastic vasculitis in which the inflammation of the brain arteries is not attributable to direct tumor invasion or compression. Conditions in this category include lymphomatoid granulomatosis and angiotropic or intravascular lymphoma (also known as angioendotheliomatosis). Treating the underlying malignancy also reduces the risk of recurrent stroke.