title: Diffuse large B-cell lymphoma occurring in patients with lymphoplasmacytic lymphoma/Waldenström macroglobulinemia. Clinicopathologic features of 12 cases.
abstract: Of 92 patients with lymphoplasmacytic lymphoma/Waldenström macroglobulinemia (LPL/WM) treated at our institution, diffuse large B-cell lymphoma (DLBCL) also developed in 12 (13%). In 10 patients, DLBCL developed 12 to 128 months (median, 44 months) after the diagnosis of LPL/WM. Two patients had LPL/WM and DLBCL simultaneously. Clinicopathologic features at diagnosis of LPL/WM did not predict the risk of DLBCL. Onset of DLBCL was characterized by worsening constitutional symptoms, profound cytopenias, extramedullary disease, and organomegaly. Immunoglobulin light chain expression was identical in both LPL/WM and DLBCL. In situ hybridization for Epstein-Barr virus (EBV) in 8 cases of DLBCL was negative. Of 11 patients with clinical follow-up information available, 8 (73%) died within 10 months of diagnosis of DLBCL. DLBCL, most likely as a result of histologic transformation, occurs in a subset of patients with LPL/WM and is associated with aggressive clinical course and poor outcome. EBV is unlikely to be involved in transformation.
authors.affiliation: Department of Hematopathology, University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA.
authors.forename: Pei
authors.initials: P
authors.lastname: Lin
authors.forename: Adnan
authors.initials: A
authors.lastname: Mansoor
authors.forename: Carlos
authors.initials: C
authors.lastname: Bueso-Ramos
authors.forename: Suyang
authors.initials: S
authors.lastname: Hao
authors.forename: Raymond
authors.initials: R
authors.lastname: Lai
authors.forename: L Jeffrey
authors.initials: LJ
authors.lastname: Medeiros
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D018572:Disease-Free Survival; D005260:Female; D006801:Humans; D007147:Immunoglobulin Light Chains / Q000032:analysis; D015451:Leukemia, Lymphocytic, Chronic, B-Cell / Q000150:complications* / Q000188:drug therapy / Q000401:mortality / Q000473:pathology; D016393:Lymphoma, B-Cell / Q000150:complications* / Q000188:drug therapy / Q000401:mortality / Q000473:pathology; D016403:Lymphoma, Large B-Cell, Diffuse / Q000150:complications* / Q000188:drug therapy / Q000401:mortality / Q000473:pathology; D008297:Male; D008875:Middle Aged; D016609:Neoplasms, Second Primary; D015996:Survival Rate; D008258:Waldenstrom Macroglobulinemia / Q000150:complications* / Q000188:drug therapy / Q000401:mortality / Q000473:pathology
chemical_list: D007147:Immunoglobulin Light Chains