TNFRSF8 and post-transplant lymphoproliferative disease: Similarly to the corresponding T-cell lymphomas occurring in non-transplanted patients, in M-PTLD of T-cell lineage, the aberrant expression of B-cell markers by neoplastic T-cells may erroneously lead to a diagnosis of M-PTLD of B-cell lineage; cases positive for CD30 and EBV may simulate cHL-PTLD.