This disease has a strong association with the Epstein-Barr virus (EBV), but the true pathogenesis of this disease has yet to be described. The cell of origin is believed to be an<unk>  cell. Blastoid<unk>  cell lymphoma appears to be a different entity and shows no association with EBV. Sites of involvement This disease is typically found and diagnosed in peripheral blood, and while it can involve any organ, it is usually found in the spleen, liver, and bone marrow.
Aggressive NK-cell leukemia
Precursor T-lymphoblastic lymphoma
Blastic plasmacytoid dendritic cell neoplasm
Angioimmunoblastic T-cell lymphoma
Peripheral T-cell lymphoma
B-cell prolymphocytic leukemia
T-cell prolymphocytic leukemia
Precursor B-cell lymphoblastic leukemia