title: Clonal relationship in multifocal non-Hodgkin's lymphoma of mucosa-associated lymphoid tissue (MALT).
abstract: To elucidate the progression of gastric marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT) type, we analyzed a case presenting simultaneously with MALT lymphoma of the stomach and lung, and a gastric high-grade diffuse large lymphoma. The rearranged immunoglobulin heavy chain (IgH) variable regions were analyzed using a polymerase chain reaction (PCR)-based assay. Clonal relationship was shown between the gastric high-grade and the pulmonary low-grade lymphoma. The gastric MALT lymphoma was not related to the other manifestations. Translocation t(11;18) was not detected in the gastric high-grade lymphoma. MALT lymphomas at various locations and with different histologies may derive from a common precursor cell. Lymphomas at identical sites may have different stem cells.
mesh_terms: D000368:Aged; D000483:Alleles; D001483:Base Sequence; D002999:Clone Cells; D005260:Female; D015326:Gene Rearrangement, B-Lymphocyte, Heavy Chain / Q000235:genetics; D006801:Humans; D007143:Immunoglobulin Heavy Chains / Q000235:genetics; D008175:Lung Neoplasms / Q000235:genetics / Q000276:immunology; D016393:Lymphoma, B-Cell / Q000235:genetics* / Q000276:immunology; D018442:Lymphoma, B-Cell, Marginal Zone / Q000235:genetics* / Q000276:immunology; D008228:Lymphoma, Non-Hodgkin / Q000235:genetics / Q000276:immunology; D008969:Molecular Sequence Data; D009378:Neoplasms, Multiple Primary / Q000235:genetics* / Q000276:immunology; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid; D013274:Stomach Neoplasms / Q000235:genetics / Q000276:immunology
chemical_list: D007143:Immunoglobulin Heavy Chains