High‐throughput analysis revealed the unique immunoglobulin gene rearrangements in plasmacytoma‐like post‐transplant lymphoproliferative disorder

Post-transplant lymphoproliferative disorder (PTLD) is a severe complication of solid organ and haematopoietic stem cell transplantation (SOT, HSCT), which occurs in 1–20% of transplant recipients.1 The majority of PTLD cells are of the B-cell type, but <5% of PTLD cells are plasma-cell type, including plasmacytoma-like lesion and plasma cell myeloma.1 Although their worse prognosis than non-PTLD myeloma is clinically significant, only case...