“…The number of neoplastic cells in the peripheral blood and bone marrow can be limited or numerous, from less than 5% to greater than 80% of lymphocytes [42]. Furthermore, there are cases with overlapping features with ENKTL [43,44]. Accordingly, ANKL has also been called aggressive NK-cell lymphoma/leukemia; however, patients with ANKL are younger and the incidence of skin involvement is significantly lower than ENKTL.…”