ALK and mature T-cell and NK-cell non-Hodgkin lymphoma: The PTCL subtypes were AITL (21/48, 43.8%), PTCL-NOS (12/48, 25%), NK/T-cell lymphoma (NKT, 7/48, 14.6%), and ALCL ALK+/- (4/48, 4/48, 8.3%).