Brain NeoplasmsLymphomaLymphoma, AIDS-RelatedHodgkin DiseaseLymphoma, B-CellLymphoma, Non-HodgkinLymphoma, T-CellReed-Sternberg CellsLymphoma, Large B-Cell, DiffuseLymphoma, FollicularCerebral ArteriesBurkitt LymphomaLymphoma, B-Cell, Marginal ZoneCerebral InfarctionLymphoma, Large-Cell, AnaplasticLymphoma, Mantle-CellCerebral PalsyLymphoma, T-Cell, CutaneousCerebrovascular CirculationMiddle Cerebral ArteryLymphoma, T-Cell, PeripheralAntigens, CD30