Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:3.4.24.11 (CD10)
 9,792 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We report the case of a 79-year-old woman with a longstanding lymphedema of the right arm who developed a skin lymphoma involving the right wrist area. Microscopically, the lesion was composed of numerous centroblasts infiltrating both the dermis and the subcutaneous tissue. Phenotypic investigations showed expression of CD20, CD79a, and bcl-2 protein by neoplastic cells. In addition, these cells were CD5 positive. No expression of anaplastic large cell lymphoma kinase (ALK), CD10, CD23, CD30, CD43, bcl-6, cyclin D1, p53 or p16INK4a could be seen. Polymerase chain reaction (PCR) analysis demonstrated a clonal rearrangement of the genes coding for the kappa light chain of the immunoglobulin (Ig). No rearrangement of the genes coding for the Ig heavy chain, t(14;18) or t(11;14) chromosome translocations, or Epstein-Barr virus (EBV) genomic sequences could be found. The tumor was classified as stage IE and was first cured by complete surgical excision. Nineteen months later, a recurrence was noted in the right elbow area. This study further illustrates that lymphoma of the skin may complicate chronic limb lymphedema. Like most of the previously reported cases, this neoplasm belonged to the category of diffuse large B-cell lymphoma. However, it showed CD5 expression as a singular feature.
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PMID:De novo CD5-positive diffuse large B-cell lymphoma of the skin arising in chronic limb lymphedema. 1601 18

Plasmablastic lymphoma is an HIV-associated non-Hodgkin's lymphoma that primarily affects the oral cavity and jaws. The purpose of this report is to describe the first case of plasmablastic lymphoma occurring in an HIV-negative, nonimmunocompromised individual, and to review the histopathologic and immunohistochemical phenotype of this lymphoma. Histopathologically, our case exhibited a dense, diffuse lymphocytic infiltrate of noncohesive large lymphocytes with plasmacytoid features. Immunohistochemical analysis revealed positivity for the B-cell marker CD79a, VS38c, Epstein-Barr virus latent membrane protein (LMP), immunoglobulin G (IgG), and lambda light chain restriction. Neoplastic cells were negative for leukocyte common antigen, CD20, CD3, CD10, CD138, Bcl-2, Bcl-6, desmin, actin, EMA, S-100, HMB45, Alk-1, HHV8, IgA, IgM, and cytokeratin. The features of this rare disease are summarized based on a comprehensive review of the epidemiologic, clinical and immunohistochemical findings of previously reported cases.
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PMID:Oral plasmablastic lymphoma in an HIV-negative patient: a case report and review of the literature. 1603 78

CD24 is a surface marker expressed in immature and mature B cells and involved in cellular adhesion and apoptosis. There are no data, which delineate the stage in early development of human B cells, which marks the expression of CD24. We studied lymphopoiesis in normal pediatric bone marrow (BM) and found that 1.5+/-0.2% of WBC were CD24(+) lymphocytes which did not express CD19. A significant fraction of these cells expressed low levels of CD45 (CD19- CD24+ CD45low cells). Small numbers of CD19- CD24+ CD45low cells were found in the regenerating BM of children with acute lymphoblastic leukemia after the completion of chemotherapy and in normal adult BM. Flow cytometric analyses have shown that CD19- CD24+ CD45low lymphocytes express CD10, CD34, CD79a, CD179a (VpreB), and TdT markers, i.e., displayed antigenic properties of early B-cell progenitors. Our data indicate that CD19- early B-cell progenitors in human BM express CD24, and that the expression of CD24 in human B-cell development precedes the expression of CD19.
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PMID:Expression of CD24 on CD19- CD79a+ early B-cell progenitors in human bone marrow. 1618 17

To evaluate the expression of cytoplasmic CD79a (CyCD79a) and other commonly used B-lymphoid immunomarkers including cytoplasmic CD22 (CyCD22), CD19, CD20 and CD10 in various acute leukemia cells and to define the most sensitive and specific markers in the diagnosis of precursor B-cell acute lymphoblastic leukemia (pB-ALL), the immunophenotypic data from 221 de novo adult and pediatric acute leukemia patients as studied using multi-parameter flow cytometry in addition to routine morphologic and enzyme cytochemical assay, were retrospectively analyzed. Cytogenetic and/or molecular biological data in all 45 cases of acute promyelocytic leukemia (APL) and 13 cases of acute leukemia suspected as AML with the fusion genes such as AML1/ETO and CBFbeta/MYH11 were investigated. The results showed that CyCD79a and CyCD22 were the most sensitive and specific markers respectively for pB-ALL. Expression of CyCD79a was seen in 100% of 58 cases of pB-ALL. At the same time, none (0%) of all 147 cases of acute myeloid leukemia (AML) and 15 cases of precursor T-cell acute leukemia (pT-ALL) was positive for CyCD22. The conclusion is made that united detection of CyCD79a and CyCD22 is the optimal immune combination for the diagnosis pB-ALL and the distinguishing pB-ALL with AML and pT-ALL.
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PMID:Comparative study of expressions of cytoplasmic CD79a and other B-lymphoid immunomarkers in acute leukemic cells. 1640 58

A 49-yr-old Japanese woman underwent upper gastrointestinal endoscopy because of nonspecific dyspepsia. Endoscopy revealed a flat elevated lesion about 15 mm in diameter adjacent to the duodenal papilla, the surface of which was uneven and covered with whitish granules. Based on the results of histological examination with immunohistochemistry (positive for CD10, CD20, CD79a, and bcl-2 protein, negative for CD5 and cyclin D1), a diagnosis of grade 1/3 follicular lymphoma was established. Systemic staging examinations suggested the lymphoma was restricted to the mucosa and superficial portion of the submucosa in the duodenal wall. The patient was treated with a combination of CHOP chemotherapy (cyclophosphamide, doxorubicin, vincristine, and prednisolone) and monoclonal anti-CD20 antibody (rituximab), in addition to radiotherapy. After six courses of this combination chemotherapy, complete regression of the lymphoma was observed. Although reports of small duodenal lymphoma (<20 mm or localized to the mucosa or submucosa) are extremely rare, the features of this case are characteristic of small duodenal lymphoma in terms of evolution around the ampulla of Vater, low-grade follicular type, occurrence in a women, occurrence in the fourth decade of life, and favorable outcome, and this type of tumor may need to be distinguished by pathogenesis and clinical behavior from various other gastrointestinal lymphomas.
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PMID:Small follicular lymphoma arising near the ampulla of vater: a distinct subtype of duodenal lymphoma? 1664 62

We report a rare case of T-cell acute lymphoblastic leukemia (T-ALL) with an aberrant phenotype. A 52-year-old man was admitted to our hospital because of lymph node (LN) swelling in the bilateral neck. A computed tomographic scan showed LN swelling in the mediastinum and a right pleural effusion. The tumor cells in the neck LN showed positivity for cytoplasmic CD3, CD7, CD19, and CD79a, whereas the tumor cells in the bone marrow (BM) showed positivity for CD10 and CD13 in addition to the former 4 antigens. The chromosomes in the BM were normal. Neither T-cell receptor gamma nor immunoglobulin heavy chain rearrangement was detected in the neck LN. We diagnosed this case as T-ALL with an aberrant phenotype and started the standard chemotherapy for ALL. The response was so effective that complete remission (CR) was easily attained. The patient is now under maintenance therapy in the first CR without hematopoietic cell transplantation.
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PMID:CD7/CD19 double-positive T-cell acute lymphoblastic leukemia. 1675 32

Plasmablastic lymphoma (PBL) of the oral cavity is classified as one subtype of diffuse large B-cell lymphoma that is most commonly seen in patients with human immunodeficiency virus infection. We report a rare case of PBL in the anal canal of a 33-year-old man with human immunodeficiency virus infection. The lymphoma cells were positive for CD138 and weakly positive for CD79a. In addition, these cells were also positive for CD10. The neoplastic cells were positive for Epstein-Barr virus and negative for human herpes virus 8. Review of the English medical literature revealed many more cases of extra-oral PBL. We propose that the term plasmablastic lymphoma of the oral cavity in World Health Organization classification be revised to simply plasmablastic lymphoma, which would include both oral and extra-oral PBLs, and the term to define the primary site of the lymphoma (ie, oral cavity) be dropped from the terminology used in World Health Organization classification.
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PMID:Extra-oral plasmablastic lymphoma: report of a case and review of literature. 1693 30

Primary gastric lymphoma usually originates from B cells of mucosa-associated lymphoid tissue (MALT) infected with Helicobacter pylori. When T-cell lymphomas develop in the stomach, they usually occur in association with infection by human T-lymphotropic virus type 1 and gastric involvement of adult T-cell leukemia. Reported herein is a unique and informative case of gastric peripheral T-cell lymphoma with a cytotoxic phenotype that histologically mimicked, and had to be carefully distinguished from, MALT-type B-cell lymphoma. The patient, a 73-year-old woman, underwent a gastric endoscopy examination, and the histological findings suggested MALT-type gastric lymphoma. Analysis of the immunoglobulin heavy chain (IgH) gene and T cell receptor gamma (TCRgamma) gene revealed monoclonal rearrangement of the TCRgamma gene. The tumor cells exhibited mild atypia and immunoreactivity with anti-CD3, anti-CD8, anti-T-cell intracellular antigen-1, antigranzyme B and antiperforin antibodies, but not with anti-CD20, anti-CD10, and anti-CD79a antibodies. The case was finally diagnosed as gastric T-cell lymphoma with cytotoxic phenotype, and this was confirmed after surgical resection. In cases such as this, small biopsy specimens from the stomach should be examined carefully for low grade B-cell-type malignant lymphoma (MALT lymphoma), because sometimes the proliferating B cells can hide the truly malignant T cells, and rearrangement analysis is useful for diagnosing T-cell malignancy.
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PMID:Gastric T-cell lymphoma with cytotoxic phenotype. 1730 Jun 76

We performed a clinical analysis on 8 patients with primary follicular lymphoma in the duodenum taken from among 26 cases of primary gastrointestinal malignant lymphoma treated in our division. The median age was 60 years (range 48 to 82 yr). The ratio of males to females was 4:4. The chief complaints were no symptoms in 4 cases, heartburn in 2 cases, lower abdominal pain in 1 case, and back pain in 1 case. All patients were in clinical stage I EA. Gastroendoscopic findings showed multiple whitish granules around the ampulla of Vater in all patients. Involvement of the site in 6 cases was only located at the second portion; lesions in the other 2 cases were located at the second portion, and at the third portion or fourth portion, respectively. A histological study showed follicular lymphoma grade 1, and an immunohistological study demonstrated that the lymphoma cells were positive for CD79a, CD10, CD20, and bcl-2. Five patients were positive for the FISH analysis fusion signal of IgH/bcl-2 genes. Rituximab with CHOP therapy was performed for 7 patients. Seven patients are currently alive, and one died of uterine cancer. At the medium-term 39 month-follow-up, 7 patients were in complete remission, and 1 patient was in partial remission. Rituximab with CHOP (CVP) therapy is a possible treatment for primary follicular lymphoma in the duodenum. Further consideration of appropriate therapy for this disease might be necessary.
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PMID:[Clinical analysis of eight patients with primary follicular lymphoma in the duodenum]. 1737 Jun 41

A 70-year-old Japanese man presented to our hospital with a 1-month history of progressive general fatigue and anorexia. A physical examination revealed severe anemic condition, mild persistent splenomegaly, and no palpable surface lymph nodes. He had pleural effusion and ascites, though no malignant cells were detected in the effusion. He eventually died without any diagnosis of his disease. Immunohistochemical staining of his tumor after autopsy showed atypical cells that were negative for epithelial membrane antigen (EMA), keratin (AE1/3), keratin-20, vimentin, factor VIII, leukocyte common antigen (LCA/T200; CD45), myeloperoxidase (MPO), terminal deoxynucleotidyl transferase (TdT), lysozyme, CD1a, CD3, CD4, CD10, CD15, CD20 (L26), CD21, CD23, CD34, CD43, CD56, CD68, CD79a, CD138, and EBER-1 in situ. Only a few scattered cells expressed CD30, but they showed no staining for anaplastic large-cell lymphoma kinase (ALK). A few scattered cells expressed S-100 antigen and the majority of cells dominantly expressed dendritic cell-associated antigens (CD35, FDC, Ki-M1p). In conclusion, we found this unknown primary tumor to be consistent with a follicular dendritic cell tumor with anaplastic features.
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PMID:Follicular dendritic cell tumor as an unknown primary tumor. 1738 Apr 43


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