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Query: UMLS:C0079731 (B-cell lymphoma)
 16,671 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

AIDS (acquired immune deficiency syndrome) and ARC (AIDS-related complex) are associated with a spectrum of lymphoproliferative disorders ranging from lymphadenopathy syndrome (LAS), an apparently benign polyclonal lymphoid hyperplasia, to B cell non-Hodgkin's lymphoma (B-NHL), i.e., malignant, presumably monoclonal B cell proliferations. To gain insight into the process of lymphomagenesis in AIDS and to investigate a possible pathogenetic relationship between LAS and NHL, we investigated the clonality of the B or T lymphoid populations by Ig or T beta gene rearrangement analysis, the presence of rearrangements involving the c-myc oncogene locus, and the presence of human immunodeficiency virus (HIV) sequences in both LAS and B-NHL biopsies. Our data indicate that multiple clonal B cell expansions are present in a significant percentage of LAS (approximately 20%) and B-NHL (60%) biopsies. c-myc rearrangements/translocations are detectable in 9 of our 10 NHLs, but not in any of the LAS cases. However, only one of the B cell clones, identified by Ig gene rearrangements carries a c-myc gene rearrangement, suggesting that only one clone carries the genetic abnormality associated with malignant B cell lymphoma. Furthermore, the frequency of detection of c-myc rearrangements in AIDS-associated NHLs of both Burkitt and non-Burkitt type suggest that the biological alterations present in AIDS favor the development of lymphomas carrying activated c-myc oncogenes. Finally, our data show that HIV DNA sequences are not detectable in LAS nor in NHL B cell clones, suggesting that HIV does not play a direct role in NHL development. Taken together, these observations suggest a model of multistep lymphomagenesis in AIDS in which LAS would represent a predisposing condition to NHL. Immunosuppression and EBV infection present in LAS can favor the expansion of B cell clones, which in turn may increase the probability of occurrence of c-myc rearrangements leading to malignant transformation.
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PMID:Multiple monoclonal B cell expansions and c-myc oncogene rearrangements in acquired immune deficiency syndrome-related lymphoproliferative disorders. Implications for lymphomagenesis. 349 Nov 76

A 47-year-old man, was referred for evaluation of asymptomatic splenomegaly in September 1981, and a diagnosis of hairy cell leukemia (HCL) at the initial clinical stage was made. The patient remained asymptomatic until May 1985, when splenectomy was performed because of anemia and splenomegaly. Bone marrow and liver biopsy specimens showed diffuse infiltration by abnormal tartase resistant acid phosphatase (TRAP) positive lymphocytes with typical aspect of hairy cells. Four months later, he developed fever of unknown origin and, at laparotomy, diffuse retroperitoneal lymph node enlargement and metastatic liver nodules were seen. Lymph node and liver biopsy specimens showed diffuse infiltration by abnormal large lymphocytes, which bore monoclonal surface immunoglobulin M and light chain kappa. Only six cases of non-Hodgkin's lymphoma associated with HCL have been published to date. This report describes an additional case of immunoblastic B-cell lymphoma, preceded 4 years earlier by the diagnosis of HCL.
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PMID:Occurrence of immunoblastic B-cell lymphoma in hairy cell leukemia. 349 61

The cell surface markers of 75 cases of non-Hodgkin's lymphoma were studied on cryostat sections using a panel of monoclonal antibodies. Forty-nine cases (65.3%) were found to express a B-cell phenotype, 23 cases (30.7%) a T-cell phenotype, 1 case (1.3%) a histiocytic phenotype and 2 cases (2.7%) no demonstrable surface markers. Follicular lymphoma accounted for only 10.7% of the cases. Most B-cell lymphomas expressed IgM-lambda or IgM-IgD-lambda, but a few failed to express surface immunoglobulin. Among the 23 cases of T-cell lymphoma, 22 were of peripheral T-cell type; most were of helper-cell (T4) phenotype and a significant number expressed J5 (CALLA) and I2 (HLA-DR). The present study shows that the percentage of T-cell lymphoma in Chinese is higher than in Caucasians, but lower than in Japanese. However, when the age-adjusted incidence of non-Hodgkin's lymphoma is considered, the incidence rates of T-cell lymphoma in Hong Kong Chinese and Japanese in areas non-endemic for adult T-cell lymphoma/leukemia are similar; the incidence in Americans is similar or slightly lower. The major difference between the races is that B-cell lymphoma, particularly the follicular type, is much rarer in Asians than Americans.
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PMID:Immunophenotypic analysis of non-Hodgkin's lymphomas in Chinese. A study of 75 cases in Hong Kong. 349 70

Bone marrow biopsies and smears were examined from 70 patients with acquired immunodeficiency syndrome (AIDS) or AIDS related conditions: 32 patients with AIDS; 9, at risk, group patients with B-cell lymphoma; 22 patients with AIDS related complex (ARC) and 7, at risk, group patients with idiopathic thrombocytopenic purpura (ITP). The first three groups showed similarity with respect to frequency of nonspecific findings: hypo and hypercellularity, marrow damage, lymphoid aggregates, histiocytosis, plasmacytosis and features of myelodysplasia. AFB and fungal organisms were present in the biopsies of 17 per cent of AIDS and 18 per cent of ARC patients. The organisms were associated with bone marrow granulomas or histiocytosis, peripheral lymphopenia and anemia. Only one out of 9 biopsies in patients with previous diagnoses of lymphoma showed involvement of the marrow. One case each of Hodgkin's disease and non-Hodgkin's lymphoma were discovered incidentally among the 22 biopsies from ARC patients without a previous diagnosis of lymphoma. Except for those presenting with ITP alone, bone marrow changes are similar in patients with AIDS and AIDS related conditions.
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PMID:A comparison of bone marrow findings in patients with acquired immunodeficiency syndrome (AIDS) and AIDS related conditions. 349 63

Pretreatment biopsy specimens of 237 consecutive patients with malignant lymphoma, who presented to us from 1979 to 1982, were reviewed and reclassified. According to the new classification proposed by the Lymphoma Study Group of Japan (LSG), there were 226 patients with non-Hodgkin's lymphoma (NHL) which was further classified as diffuse lymphoma (216 cases), follicular lymphoma (4 cases), mycosis fungoides (4 cases), and others (2 cases). The 216 cases of diffuse NHL were subdivided into small cell (2 cases), medium-sized cell (71 cases), mixed (7 cases), large cell (92 cases), pleomorphic (40 cases), lymphoblastic (3 cases), and Burkitt's type (1 case) lymphoma. Cell surface marker studies using conventional methods were performed on 65 NHL patients, of whom 45 showed T-cell marker and 11 B-cell marker, and 8 had neither marker. The average survival periods were 13.1 mo for 107 patients with NHL, 27.9 mo for those with mycosis fungoides and 70.0 mo for 10 patients with Hodgkin's disease. Patients with adult T-cell leukemia survived for an average of only 5.5 mo. Histologically diffuse pleomorphic type had the worst prognosis. T-cell lymphoma appeared to have a poorer prognosis than B-cell lymphoma.
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PMID:Malignant lymphoma in the Miyazaki district: analysis of 237 biopsy cases. 398 13

Twenty-nine cases of non-Hodgkin's lymphoma of Waldeyer's ring (W-NHL) and nasal cavity or paranasal sinus (N-NHL) were studied for tumor-surface marker phenotype and histopathologic correlation with clinical features. Immunostaining procedures on tissue sections by using xenoantisera and monoclonal antibodies to human B- and T-cells enabled the authors to demonstrate precise surface marker phenotypes of tumor cells and, moreover, the histologic localization of normal or neoplastic B- and T-cells in preserving the original structure of lymphoid organs or tumor tissues. In 22 cases of W-NHL, 19 (86%) had B-cell markers and 3 (14%) had T-cell markers, whereas 6 of 7 cases (86%) of N-NHL had T-cell markers. Tumor cells in T-cell lymphomas in W-NHL and N-NHL reacted with antibodies to peripheral T-cells except one case of W-NHL. Rappaport "histiocytic" subtype was heterogeneous with respect to both surface marker characteristics and morphologic features, i.e., seven had B-cell markers and four had T-cell markers, and they were all subdivided into "large cell" or "large cell, immunoblastic" in Working Formulation and "large cell" or "pleomorphic" in Lymphoma Study Group classification. The actuarial survival curve for all T-cell lymphoma patients was characterized by a rapid initial decline and a subsequent plateau, which contained two of the long survivors. In contrast, the B-cell lymphoma group had a more graded decline. The median and actuarial survivals of the T-cell lymphoma group were far inferior to those for the lymphoma group that expressed B-cell markers.
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PMID:Non-Hodgkin's lymphoma of Waldeyer's ring and nasal cavity. Clinical and immunologic aspects. 401 70

A sensitive cytofluorometric technique, the "kappa-lambda test," permits detection of small numbers of monoclonal B lymphocytes (clonal excess). Such a method might represent a new diagnostic tool for diagnosis of non-Hodgkin's lymphomas, potentially providing definitive evidence of lymphomatous involvement in cases equivocal by standard immunologic methods. To determine the significance of detecting B cell clonal excess in lymphoid tissues, we applied the kappa-lambda test to cell suspensions from 60 consecutive specimens suspected to involvement by malignant lymphoma. Results were correlated with the pathologic diagnosis and with standard cell marker studies in each case. B cell clonal excess was observed in 24 of the 25 cases of non-Hodgkin's lymphoma of B cell origin, including a single case involving early detection of recurrence. None of the remaining cases, including benign reactive hyperplasia, T cell lymphoma, and Hodgkin's disease, showed evidence of B cell clonal excess. Selective examination of cell subpopulations was also achieved using this cytofluorometric method. We conclude that the detection of B cell clonal excess by the kappa-lambda test represents a new approach to the diagnosis of B cell lymphoma, which provides certain advantages over more standard methods of cell marker analysis.
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PMID:Cytofluorometric detection of B cell clonal excess: a new approach to the diagnosis of B cell lymphoma. 642 37

The pathophysiology of cerebral tumor mass in cases of systemic non-Hodgkin's lymphoma is not well known. We experienced with two cases with this lesion. The purpose of this report is not only case presentation but also an analysis of cases from the literature from the clinical, radiological, histological, immunological and therapeutic aspects. Case 1 was a 82-year-old man who had weakness in the right arm and for the past month. For about two years he had been received anticancer chemotherapy because of a systemic malignant lymphoma at another hospital. Neurological examination revealed disorientation and right hemiparesis. Microscopic and immunological studies of the biopsy specimen of the enlarged supraclavicular node showed a non-Hodgkin's B-cell lymphoma of the diffuse large cell type according to the Lymphoma Study Group (LSG) classification. The clinical stage (CS) of the lymphoma was IV except for the CNS lesion by systemic examination including lymphography. CT scan on admission revealed remarkable enhancement of a nodular high density area near the lateral ventricle, accompanied by surrounding low density. Angiography failed to reveal a tumor stain. CSF cytology was positive although no pleocytosis was observed. Case 2 was a 70-year-old man who had weakness of the right foot for two weeks. About three years ago he underwent orchiectomy for a testicular tumor at another hospital. Neurological examination revealed disorientation, memory loss and right hemiparesis.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Localized cerebral tumor mass in systemic non-Hodgkin's lymphoma--report of two cases and review of the literature]. 646 9

Non-Hodgkin's lymphoma (NHL) in an 8-year-old boy developing from recurrent neck mass during 15-months history is presented. Two biopsies carried out during this period were interpreted as reactive change. The third biopsy was diagnosed as NHL. He died of the systemic disease 19 months after the first admission. Clinical, histological and immunocytochemical investigations for the three biopsy materials revealed that the first and the second biopsies were reactive, and the third biopsy was neoplastic, B cell lymphoma. Known etiological factors causing lymphoreticular disorders are reviewed by the literatures, and absence of these factors in the present case is described.
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PMID:Childhood non-Hodgkin's lymphoma developing from recurrent neck mass. 660 20

Four patients with adult T-cell leukemia (ATL) and 4 patients with non-Hodgkin's lymphoma were treated with alpha-type interferon (Human Lymphoblastoid Interferon: HLBI). Treatment regimen consisted of 3 to 12 million units (MU) of HLBI given intramuscularly once daily. The total dose varied from 36 to 520 MU. Complete remissions were obtained in one of 4 patients with ATL and one of 3 patients with B-cell lymphoma. A partial remission was yielded in one patient with B-cell lymphoma. An overall response rate (CR + PR) was 37.5%. Toxicity included flu-like symptoms, myelosuppression, G-I tract symptoms, fatigue, high fever and hepatic disturbance. On the basis of this study, we have concluded that HLBI is effective for the treatment of ATL and B-cell lymphoma.
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PMID:[Effect of human lymphoblast interferon in adult T-cell leukemia and non-Hodgkin's lymphoma]. 660 14


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