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)

Lymphoma-like lesion of the female genital tract is rare. We report 12 cases of lymphoma-like lesions of the cervix in patients ranging from 27-54 years of age (mean 41). The commonest clinical presentation was post-coital bleeding (8), which was followed by vaginal bleeding (2) and leukorrhagia (4). Grossly, the lesions were either polypoid (8) or ulcerated (4). On histological examination, the lesions were eroded and involved the superficial mucosa 2-12 mm (mean 4 mm) in depth. They comprised sheets of dense populations of predominantly large lymphoid cells admixed with small lymphocytes, plasma cells, and neutrophils. Follicle formation was occasionally seen. Immunostaining revealed the majority of the large cells were B cells (CD20(+), CD79a(+)) with no aberrant CD5 and CD43 expression. The lymphoid cells in the follicle were CD10(+) and bcl6(+) but negative for bcl-2. Cyclin D1 was negative. There was no immunoglobulin light chain restriction and polymerase chain reaction for T cell receptor-gamma chain gene and immunoglobulin heavy chain gene demonstrated polyclonal patterns. In situ hybridization for EBER and high risk HPV 6/11 and 16/18 were negative. All patients were well with one case developing local recurrence in the follow-up period up to 7 years.
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PMID:Lymphoma-like lesion of the uterine cervix: report of 12 cases of a rare entity. 1741 89

Follicular lymphoma (FL) is a neoplasm originating from germinal centre cells, corresponding to 25-40% of non-Hodgkin's lymphomas. Transformation into diffuse large B cell lymphoma (DLBCL) occurs in about one-third of cases. CD5 is expressed in B-chronic lymphoid leukaemia/small lymphocytic lymphoma and mantle cell lymphoma, but can rarely be expressed in conjunction with CD10 in well-documented cases of FL. In this report one case of grade 1 FL is described, which transformed into a DLBCL 6 months after initial diagnosis, with both tumours expressing CD5. In both specimens, neoplastic cells were strongly positive for CD20, CD79a, bcl-2, bcl-6 and CD5 in virtually all cells. CD10 was strongly positive in initial specimens and weakly positive in the DLBCL. Investigation using the PCR confirmed the derivation of the DLBCL from the FL as they presented the same immunoglobulin heavy chain gene rearrangement and the same BCL2-J(H) break point.
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PMID:CD5-positive diffuse large B cell lymphoma arising from a CD5-positive follicular lymphoma. 1751 19

Plasmablastic microlymphoma (PML) is defined as the accumulation of monotypic but polyclonal plasmablasts in lymphoid tissues involved in human herpes virus 8 (HHV-8)-positive multicentric Castleman's disease (MCD). So far, the nature of this very rare condition remains poorly determined. In this study, we describe a human immunodeficiency virus (HIV)-seropositive patient who developed a PML in the setting of HHV-8-positive MCD. In contrast to the cases previously reported, most of the plasmablasts in our patient were localized within the germinal center (GC) of lymphoid follicles. These plasmablasts expressed the multiple myeloma-1/interferon regulatory factor-4 (MUM1/IRF4) protein as well as IgMlambda in a monotypic fashion. They did not show any immunoreactivity with antibodies directed against Pax-5, CD20, CD79a, CD10, CD30, CD23, CD138, epithelial membrane antigen (EMA) or BCL-6. These cells exhibited a high proliferation rate, expressed the HHV-8 latent nuclear antigen-1, and secreted the HHV-8 viral homologue of human interleukin-6. Polymerase chain reaction analysis did not demonstrate any clonal rearrangement of the genes coding for the heavy chain of the immunoglobulin. Moreover, no Epstein-Barr virus (EBV) RNA transcript could be found, using in situ hybridization. The present case illustrates that PML may arise within the GC of lymphoid follicles in the absence of EBV coinfection. In our opinion, PML occurring in MCD likely represents a variant of HHV-8-positive MCD in which lytic HHV-8 replication is particularly prominent, due to a local or systemic immune imbalance.
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PMID:Plasmablastic microlymphoma occurring in human herpesvirus 8 (HHV-8)-positive multicentric Castleman's disease and featuring a follicular growth pattern. 1761 57

A 68-year-old man presented with systemic lymph node swelling. A biopsy specimen taken from the right cervical lymph node showed that the normal architecture was replaced by a diffuse proliferation of large lymphoid cells with large atypical nuclei. Immunohistochemical analysis showed that the atypical lymphoid cells were positive for CD5, CD10, CD20, CD79a, and Bcl2, and negative for CD3 and cyclin D1. A diagnosis of diffuse large B-cell lymphoma was made. Karyotypic findings included add(5)(q13), del(6)(q13), add(17)(p11), add(19)(p11), add(19)(p13), and t(6;14)(q15;q32). The serum lactate dehydrogenase level and indirect bilirubin level were slightly elevated. Elliptocytosis was observed in the peripheral blood, and a diagnosis of hereditary spherocytosis was made from the family history. Regarding CD5+CD10+ diffuse large B-cell lymphoma with a non-random chromosomal translocation of t(6;14)(q15;q32), studies on the mechanism of lymphomagenesis are needed.
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PMID:t(6;14)(q15;q32) in a patient with CD5+CD10+ diffuse large B-cell lymphoma. 1787 29

The differential diagnosis of acute lymphoblastic leukemia (ALL) from other small round blue cell tumors in children is very important for proper treatment, but sometimes difficult. CD45 is expressed on almost all-human leukocytes and not expressed on other small round blue cell tumors. Moreover, CD19 is expressed on all stages of B lineage cells and loss of this antigen is very rare in precursor B-cell ALL. We report a case of ALL with atypical morphology and immunophenotype. A 6-yr-old girl presented with fever and weight loss. Many abnormal cells with variable sized, high nuclearcytoplasmic ratio and distinct nucleoli were counted 23% in bone marrow. The results of immunophenotyping were negative for CD45, CD19, CD10, CD20, CD3, CD5, CD7, CD56/16, CD13, and CD33 and positive for CD22, TdT, and CD34. The immunohistochemical staining of bone marrow biopsies was positive for CD79a, CD10, TdT and CD99. The cytogenetic study showed normal karyotype but amplification of MLL (myeloid/lymphoid or mixed lineage leukemia) gene was suggestive in the fluorescent in situ hybridization. The patient received the standard chemotherapy for acute lymphoblastic leukemia and reached complete remission.
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PMID:A case of CD45-, CD19- precursor B cell acute lymphoblastic leukemia with an atypical morphology. 1809 85

A 79-year-old man presented with back pain. Chest CT scan showed elevated nodular lesions in the right parietal pleurae with pleural effusion. There were no intrapulmonary or mediastinal abnormalities. Under local anesthesia, right thoracoscopy and subsequent thoracoscopic pleural resection were performed using an insulation-tipped diathermic knife (IT-knife). The resected pleura, 2.2 cm in diameter, had a rough granular surface. Lymphoid cells histologically infiltrated diffusely into the pleura. They were composed of centrocyte-like and monocytoid cells. On immunohistochemistry they were found to be positive for Bcl2, CD20, CD45RB and CD79a, but negative for CD3, CD5, CD10 and cyclin D1. EBV-encoded small RNA-1 (EBER-1) in situ hybridization was negative. A diagnosis of extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma) arising in the pleura was therefore made. To the authors' knowledge this is the first case in which IT-knife was used for diagnosis of a pleural lesion. This large, single-piece, only slightly crushed pleural specimen, enabled study of histopathological findings (listed here) that could not have been obtained on conventional biopsy: (i) lack of apparent evidence of plasmacytic differentiation; (ii) no recognition of lymphoid follicles; (iii) mesothelial cells not infiltrated by lymphoma cell clusters; (iv) thin layer of hyperplastic mesothelial cells continuously covering the surface; and (v) no proliferation of fibroblast-like submesothelial cells.
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PMID:Pleural MALT lymphoma diagnosed on thoracoscopic resection under local anesthesia using an insulation-tipped diathermic knife. 1832 20

Precursor lymphoblastic leukemia/lymphoblastic lymphoma (ALL/LBL) is a malignant neoplasm of precursor lymphocytes of T- or B-cell phenotype. We describe the unusual features of an ALL/LBL in an adolescent man in whom the disease presented with involvement of lymph nodes, but without bone marrow and peripheral blood involvement. Immunohistochemical studies revealed that the tumor cells were positive for CD3, CD34 class II, CD10, CD79a and CD99 but negative for TdT. Even though TdT was negative, he received ALL-therapy and is now in remission.
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PMID:Terminal deoxynucleotidyl transferase negative T-cell lymphoblastic lymphoma in aleukemic patient. 1851 18

Non-Hodgkin lymphoma is a rare cause of biliary obstruction. To the best of our knowledge, non-Hodgkin lymphoma in the peripancreatic region causing obstructive jaundice with simultaneous portal vein (PV) invasion has not yet been reported. We present a 50-year-old patient with obstructive jaundice whose extrahepatic portal vein was obstructed by the invasion of a peripancreatic non-Hodgkin lymphoma. The patient denied any other symptoms such as recurrent fever, night sweat and loss of body weight. Computed tomography (CT) revealed a 10 cm mass in the retroperitoneal space behind the head of the pancreas causing obstruction of the distal bile duct and the PV. A pylorus-preserving pancreaticoduodenectomy combined with a PV resection was performed. The PV was reconstructed using an autologous right internal jugular vein graft. The resected specimen showed endoluminal invasion of both the bile duct and the PV. Histological examination showed the mass consisting of diffuse sheets of large malignant lymphoid cells. These cells were positive for CD20 and CD79a, partially positive for CD10, and negative for CD3, CD4, CD5, CD8 and CD30. The pathologic diagnosis was diffuse large B-cell type non-Hodgkin lymphoma and the patient was transferred to the Department of Hematology and Oncology for chemotherapy. He received four cycles of combined chemotherapy including cyclophosphamide, doxorubicin, vincristine and prednisone plus rituximab, and three cycles of intrathecal chemoprophylaxis including methotorexate, cytosine arbinoside and prednisone. The patient is alive with no evidence of the disease for 7 mo after operation and will receive additional courses of chemotherapy.
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PMID:Non-Hodgkin lymphoma as a cause of obstructive jaundice with simultaneous extrahepatic portal vein obstruction: a case report. 1860 98

Flow cytometry is the preferred method of diagnosing and immunophenotyping acute lymphoblastic leukemia (ALL). However, there are situations in which immunohistochemical staining (IH) of bone marrow trephine biopsy specimens can be used to provide immunophenotypic information. To evaluate the use of IH and to confirm its value in diagnosing and typing of ALL, we studied 50 cases of denovo ALL that were previously classified into pre B, T and B by morphologic, cytochemical and FC methods. Paraffin embedded bone marrow trephine biopsies sections were stained using a panel of antibodies,namely, myeloperoxidase (MPO), terminal deoxynucleotidyl transferase (TdT), CD10, CD20, CD79a, CD3. The cases included 37 pre BALL, 10 T ALL and 3 mature BALL. TdT was the most commonly expressed antibody and was positive in 41 of 50 cases of ALL (82%) and in 95% of pre B ALL cases. CD79a and CD10 were positive in 68% and 65% of pre B ALL cases, respectively. CD79a showed similar positivity in B ALL cases (66%). CD 20 was positive in 66% of mature B ALL cases but less positive in pre B ALL (22%). CD3 was positive in 70% of T ALL cases and negative in other ALL subtypes. All of the cases were negative for MPO. Diagnosis and immunophenotyping of acute lymphoblastic leukemia is possible using immunohistochemical staining of bone marrow trephine biopsies.
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PMID:Immunophenotyping of acute lymphoblastic leukemia using immunohistochemistry in bone marrow biopsy specimens. 1871 74

Translocation (14;14)(q11;q32) is one of the recurrent chromosome aberrations in ataxia-teleangiectasia (AT) and T-cell malignancies. In patients with the t(14;14), the TCL1 and TCRalpha/delta genes were found to be involved at the molecular level. However, t(14;14)(q11;q32) is an exceedingly rare phenomenon in B-lineage acute lymphoblastic leukemia (B-ALL). To date, it has been reported in only 5 B-ALL cases. Here, we report another B-ALL case with t(14;14)(q11;q32) in a 39-year-old female. The immunophenotype of the blasts showed positivity for CD79a, CD10, CD19, and HLA-DR. Chromosome analysis of the bone marrow (BM) cells at presentation showed the karyotype 47,XX,+4,t(14;14)(q11;q32). Fluorescence in situ hybridization (FISH) demonstrated trisomy 4 and the simultaneous involvement of the IGH gene at 14q32 and the CEBPE gene at 14q11, which differs from the genes involved in T-cell leukemias. After chemotherapy, the patient achieved complete remission (CR). Later, she received allogeneic peripheral blood stem cell transplantation. After CR, the karyotype of the BM cells was normal. She was disease-free at a 6-month follow-up. We suggest that t(14;14)(q11;q32) involving the IGH and CEBPE genes in B-ALL is rare, but it is a recurrent abnormality that could identify a new subgroup of B-ALL.
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PMID:Translocation (14;14)(q11;q32) with simultaneous involvement of the IGH and CEBPE genes in B-lineage acute lymphoblastic leukemia. 1902 93


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