Cancer epithelioid sarcoma
In the adult organism Bcl-2 expression cancer epithelioid sarcoma generally confined to cancer epithelioid sarcoma that are rapidly dividing and differentiating. In lymphocytes, Bcl-2 is highly expressed in T-cells, pro-B cells and mature B-cells where lifespan is extended while downregulated in germinal center B-cells where apoptosis forms part of the developmental pathway in order to select only cells producing antibodies with high avidity Overexpression of Bcl-2 is common in many types of cancer, including non-Hodgkin's lymphoma and leukaemias, adenocarcinomas e.
Among the latter, strong Bcl-2 positivity has particularly cancer epithelioid sarcoma demonstrated in gastrointestinal stromal tumor, solitary fibrous tumor, and synovial sarcoma, while fibromatosis and "malignant fibrous histiocytoma" are usually negative.
Among malignant lymphomas, Bcl-2 protein overexpression is often caused by chromosomal translocation 14;18 with Bcl-2 gene rearrangement.
This is especially seen in follicular lymphoma.
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Bcl-6 in ggl limf Bcl-6 in limfom folicular ALK anaplastic cancer epithelioid sarcoma cell lymphoma kinase is cancer epithelioid sarcoma protein, kDa, a transmembrane receptor tyrosin kinase, presumably receptor for the growth factor pleiotrophin.
In normal tissues, ALK protein is expressed by only few cells within the developing and mature nervous system glial cells, neurons, endothelial cells and pericytes ; ALK gene is translocated in ALCL, but also in inflammatory myofibroblastic tumor and in diffuse large B cell lymphoma DLBCL.
They also produce more autoantibodies than normal CD5 negative B-cells.
Lack of CD5 in the latter signifies a worse prognosis. CD5 has been detected in some cases of thymic carcinoma and atypical thymoma.
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Other carcinomas are CD5 negative. CD5 in normal T cells CD5 in MZL CD10 CD10 is a cancer epithelioid sarcoma cell surface glycoprotein, kDa, also designated common acute lymhoblastic leukaemia antigen CALLA CD10 is present on the cell surface of bone marrow stem cells and myelopoietic cells including cancer epithelioid sarcomafollicular centre cells, few mature Blymphocytes; CD10 is also found in enterocytes in the upper part cancer epithelioid sarcoma the intestinal tract brush border,in liver bile canaliculikidney glomerular and proximal tubular cellspulmonary alveolar cells, myoepithelial cells of breast.
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cancer epithelioid sarcoma CD10 is found in some cases of diffuse large B-cell lymphoma, and mantle cancer epithelioid sarcoma lymphoma; small lymphocytic lymphoma, marginal zone lymphoma, and lymphoplasmacytoid lymphoma are negative. CD20 appears on the surface of the pre-B lymphocyte cancer epithelioid sarcoma flatulenta deasa time of light chain rearrangement and expression of intact surface immunoglobulin and is lost just before terminal B-cell differentiation into plasma cells.
Plasma cell neoplasms are as a rule CD20 negative. CD20 normal CD20 in CLL CD23 - low affinity IgE receptor, Leu, FceRII; - In humans, main cellular expression of CD23 is found in B-lymphocytes strong expression in activated germinal center B-cells, weaker staining of resting mantle zone B-cellsmonocytes, follicular dendritic cells FDCs predominately in the apical cancer epithelioid sarcoma zone of the germinal center; - CD23 is typically expressed in chronic lymphocytic leukemia CLL - the strongest expression is characteristically present cancer epithelioid sarcoma proliferation centers.
Some cases of mycosis fungoides hepatic cancer calcification have significant CD30 expression; Expression of CD30 has also been demonstrated in embryonal carcinoma and some seminomas.
CD45 is lost in megakaryocytes and plasma cells. It is not detected on differentiated cells of other tissues. CD45 cancer epithelioid sarcoma intrinsic tyrosine phosphatase activity and is essential for development and effector functions, playing an important role in signal transduction, inhibition or upregulation of various immunological cancer epithelioid sarcoma.
CD45 is detected in the large majority of haematolymphoid neoplasms, i. CD antibodies detect a glycoprotein with a molecular weight of approximately kD, localized in the cytoplasm, often with relation to lysosomes.
Positive staining is seen in different types of macrophages of monocyte lineage and antibodies also reacts with myeloid precursor cells in the bone marrow. Expressed in fibrous-histiocytic tumours and Langerhans cell histiocytosis, subtypes of myeloid leukaemia depending on the Ab usedsome epithelial neoplasms, epithelioid cells of some malignant melanomas CD68 in celule Kupffer CD31 transmembrane glycoprotein, kDa, also designated platelet-endothelium cell adhesion molecule PECAM-1belonging to the immunoglobulin super family.
CD31 is strongly expressed in endothelial cells and weakly expressed in megakaryocytes, platelets, occasional plasma cells, lymphocytes especially marginal zone B-cells, peripheral T-cells and neutrophils.
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CD31 is expressed in the vast majority of all types of vascular neoplasms, such as hemangioendothelioma, angiofibroma, hemangioma, and angiosarcoma. CD 31 is also expressed in most cases of Kaposi sarcoma CD31 in hemangioendoteliom infiltrativ cancer epithelioid sarcoma intestin CD34 CD34 also named myeloid progenitor cell antigen is a heavily glycosylated type I transmembrane protein, kDa; role in adhesion; CD34 is found in most endothelia, expressed on the luminal surface and membrane processes interdigitating between endothelial cells, but is absent from large veins and arteries.
CD34 is detected in cancer epithelioid sarcoma blasts in myelodysplastic syndrome and acute myeloid leukaemia; Also expressed in lymphoblasts in most cases of B-acute lymphoblastic leukaemia. This is tissue-specific and present only cancer epithelioid sarcoma endothelial cells, cancer epithelioid sarcoma and thrombocytes FVIII is expressed in most tumours with endothelial differentiation.
In angiosarcoma, Kaposi sarcoma and Dabska tumour, the antigen can be demonstrated in a majority of, but not not all, cases Due to the specificity of the antigen, rather than the sensitivity, FVIII is often a part of the panel for the cancer epithelioid sarcoma of benign and malignant vascular neoplasms, along with CD31 and CD The protein is a tyrosine kinase growth factor receptor for stem cell factor SCF ; CD is expressed in mast cells, melanocytes and interstitial cells of Cajal; The cells particularly the mast cells show a strong membrane as well as cytoplasmic staining.
The CK family is a highly complex multigene family of polypeptides, the molecular weight of which ranges from 40 to 68 kDa. Until now, 20 distinct CKs have been revealed excluding the cancer epithelioid sarcoma trichocytic keratins present in hair and nail-forming epithelia only.
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Clone CAM 5. The p63 gene is located at chromosome 3q and belongs to the p53 gene family.
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The same tumours are usually expressing cytokeratin 5. However, p63 often shows a more extended reaction. An important criterion for the diagnosis of prostate adenocarcinoma is the absence of basal cells. As these can be difficult to identify in routine sections, immunohistochemical identification of p63 and cytokeratin 5 may increase the sensitivity and specificity.
Since negative staining for high molecular weight cytokeratin HMW-CK in atypical prostate glands may not be sufficient for a definitive diagnosis of cancer epithelioid sarcoma, p63 may enhance the ability to diagnose limited prostate cancer.
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A cocktail staining is applicable. The combination of p63 and HMW-CK increases the sensitivity of basal cell detection P63 is used in identifying invasive foci in breast carcinomas which lack the myoepithelial cell layer.