lymphoplasmacytic lymphoma prognosisnon hodgkin lymphoma prognosisprognosis for follicular lymphomadlbcl lymphoma prognosisprognosis for double hit lymphomawaldenstrom lymphoma life expectancyperipheral t cell lymphoma prognosiswaldenstrom diseaseprognosis mantle cell lymphomalymphoma medicationsfallicular lymphomawaldenstrom lymphoma survival rate