title: From benign polyclonal to malignant monoclonal lymphoproliferation in a patient with primary Sjögren's syndrome.
mesh_terms: D000368:Aged; D001402:B-Lymphocytes / Q000473:pathology; D004848:Epithelium / Q000473:pathology; D005260:Female; D005455:Fluorescent Antibody Technique; D006801:Humans; D007119:Immunoblastic Lymphadenopathy / Q000473:pathology; D007075:Immunoglobulin M / Q000032:analysis; D008198:Lymph Nodes / Q000473:pathology; D008223:Lymphoma / Q000473:pathology; D008232:Lymphoproliferative Disorders / Q000473:pathology*; D009369:Neoplasms / Q000473:pathology*; D010306:Parotid Gland / Q000473:pathology; D012859:Sjogren's Syndrome / Q000473:pathology*
chemical_list: D007075:Immunoglobulin M