Spectrum of LGL leukemia and associated diseases. AA, aplastic anemia; CLL, chronic lymphocytic leukemia; ITP, immune thrombocytopenia; MGUS, monoclonal gammopathy of undetermined significance; MM, multiple myeloma; PNH, paroxysmal nocturnal hemoglobinuria; Sjögren Sd, Sjögren syndrome; SLE, systemic lupus erythematosus.