title: [Primary pulmonary B-cell lymphoma of the MALT type].
abstract: The malignant B-cell lymphoma of the MALT-type shows significant differences from nodal lymphomas with respect to its biological, molecular genetic, and clinical properties. According to the proposal from the International Lymphoma Study Group for a Revised European-American Classification of Lymphoid Neoplasms, MALT-B-cell lymphomas have been defined as an extranodal subgroup of marginal zone B-cell lymphomas and may have lower and higher grade types. We have applied this classification to 24 cases of primary B-cell lymphomas of the lung. These tumors showed histopathologic features of low (n = 20) and/or high grade neoplasms (n = 4) recapitulating the structure of the acquired bronchus-associated lymphoid tissue (BALT). According to our experience, the diagnosis of BALT-type B-cell lymphoma, is both practically feasible and reproducible not only for surgical material but even for biopsy specimens.
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000032:analysis; D001706:Biopsy; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D008168:Lung / Q000473:pathology; D008175:Lung Neoplasms / Q000145:classification / Q000473:pathology* / Q000601:surgery; D018442:Lymphoma, B-Cell, Marginal Zone / Q000145:classification / Q000473:pathology* / Q000601:surgery; D008228:Lymphoma, Non-Hodgkin / Q000145:classification / Q000473:pathology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011518:Proto-Oncogene Proteins / Q000032:analysis; D019253:Proto-Oncogene Proteins c-bcl-2; D015203:Reproducibility of Results
chemical_list: D014408:Biomarkers, Tumor; D011518:Proto-Oncogene Proteins; D019253:Proto-Oncogene Proteins c-bcl-2
vernacular_title: Primäre pulmonale B-Zell-Lymphome vom MALT-Typ.