نتایج جستجو برای: malt lymphomas
تعداد نتایج: 19284 فیلتر نتایج به سال:
A particular extra-nodal lymphoma type arises from B cells of the marginal zone (MZ) of mucosa-associated lymphoid tissue (MALT). The aetiology of MZ lymphomas suggests that they are associated with chronic antigenic stimulation by microbial pathogens, among which Helicobacter pylori-associated gastric MALT lymphoma is the best studied. Recently, MALT lymphomas have been described in the contex...
A retrospective survey of patients with pathologically reviewed extragastric mucosa-associated lymphoma tissue (MALT) lymphomas from 20 institutions was performed. A total of 180 patients with histologically confirmed diagnosis of extragastric MALT lymphomas were studied. Their median age was 59 years (range, 21-92 years). Ann Arbor stage I disease was present in 115 patients (64%) and stage II...
FISH studies on 37 ocular MALT-type lymphomas yielded chromosomal translocations affecting MAL andT1 BCL10 in 1 case each, no evidence for a break in the FOXP1 locus, and trisomy 3 in 14 out of 34 cases (41%). Three out of 8 cases analyzed used the highly mutated VH3-23 gene and showed ongoing somatic hypermutations.
To clarify the clinicopathological findings of B-cell lymphoma associated with Sjögren’s syndrome (SJS) among Japanese Patients, 15 individuals with this disease were studied. The patients, 14 females and one male, ranged in age from 41 to 73 years with a median age of 56 years. These lymphomas arose not only in the salivary gland (n=4) but also in other mucosal extranodal sites (n=5). Histolog...
BACKGROUND Various histological classifications developed for nodal lymphomas failed to be of value in extranodal lymphomas. More recently, gastric lymphoma is considered to represent a distinctive group derived from mucosa associated lymphoid tissue (MALT). AIM To study the prognostic value of malignancy grading based on the concept that most gastric lymphomas are of MALT origin, the endosco...
Gastric marginal zone B-cell lymphoma of MALT type (MALT lymphoma) arises in the context of chronic inflammation induced by the bacterial pathogen Helicobacter pylori. Although generally considered an indolent disease, MALT lymphoma may transform to gastric diffuse large B-cell lymphoma (gDLBCL) through mechanisms that remain poorly understood. By comparing microRNA expression profiles of gastr...
Mucosa-associated lymphoid tissue (MALT) lymphoma is a relatively common, indolent B-cell lymphoma. MALT lymphoma with large tumor cells (LTCs) is believed to have the potential to transform to aggressive diffuse large B-cell lymphoma (DLBCL) which may have a poor prognosis. C-MYC is a transcription factor. Its translocation and overexpression predicts an inferior prognosis and poor response to...
Marginal zone lymphomas are indolent B-cell lymphomas that originate from the marginal zone of B-cell follicles. For several subtypes, the initiation of disease appears to be a consequence of chronic infection and/ or inflammation. While the initial lymphoid hyperplasia is driven by physiologic antigenic stimulation, additional oncogenic events, such as chromosomal translocations leading to con...
A retrospective survey of patients with pathologically reviewed extragastric mucosa-associated lymphoma tissue (MALT) lymphomas from 20 institutions was performed. A total of 180 patients with histologically confirmed diagnosis of extragastric MALT lymphomas were studied. Their median age was 59 years (range, 21-92 years). Ann Arbor stage I disease was present in 115 patients (64%) and stage II...
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