ulex/sarcoma

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Ulex europaeus I lectin as a marker for tumors derived from endothelial cells.

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Some skin and soft tumors, which generally are assumed to be derived from endothelial cells or blood vessels, were characterized with fluorochrome-labeled Ulex europaeus I agglutinin (UEA I), recently shown to bind specifically to endothelial cells in various normal human tissues. The staining

[Studies using Ulex europaeus agglutinin I (UEA I) on normal tissue and synovial sarcomas, mesotheliomas and carcinomas].

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Staining for factor VIII related antigen and Ulex europaeus agglutinin I (UEA-I) in 230 tumours. An assessment of their specificity for angiosarcoma and Kaposi's sarcoma.

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In this study we examined the staining reactivity of commercially available antisera to factor VIII related antigen (F VIII RAg) and Ulex europaeus agglutinin I (UEA-I) on sections from 230 formalin fixed paraffin embedded tumours. These included 196 sarcomas, 20 carcinomas and 14 angiomas. All

Endothelial cell markers in vascular neoplasms: an immunohistochemical study comparing factor VIII-related antigen, blood group specific antigens, 6-keto-PGF1 alpha, and Ulex europaeus 1 lectin.

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Markers for endothelial cells including Ulex europaeus 1 lectin, blood group A, B, and H, and the prostaglandin metabolite 6-keto-PGF1 alpha were evaluated in paraffin secretions from formalin-fixed benign and malignant vascular neoplasms using a variety of immunohistochemical techniques, and

Evidence for the origin of Kaposi's sarcoma from lymphatic endothelium.

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Previous studies utilizing enzyme histochemistry, electron microscopy, and immunohistochemistry have failed to establish the cell of origin in Kaposi's sarcoma. The authors have rigorously tested the prevailing hypothesis that the lesion defined as Kaposi's sarcoma is derived from vascular

Relationship of factor XIIIa-positive dermal dendrocytes to Kaposi's sarcoma.

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The histogenesis of Kaposi's sarcoma (KS) has been the subject of controversy, much of which has centered around whether the spindle cells of KS are derived from vascular endothelium or from lymphatics. Recently, some investigators have speculated that the spindle cells of KS are derived from dermal

Kaposi's sarcoma in AIDS: basement membrane and endothelial cell markers in late-stage lesions.

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Early-stage lesions of Kaposi's sarcoma (KS) are composed of single-layered, highly flattened cells lining collagen bundles, whereas late-stage lesions contain densely packed, spindle-shaped cells. We examined the progression of KS lesions in oral mucosa and lymph nodes from patients with AIDS,

Immunostaining for CD31 and CD34 in Kaposi sarcoma.

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OBJECTIVE To evaluate antibodies directed against CD31 (JC70/A) and CD34 (QBEND/10 and anti-HPCA-1) more extensively in Kaposi sarcoma; to assess their value in routine diagnosis; and to compare them with the traditional endothelial cell markers Ulex europaeus agglutinin 1 (UEA-1) and factor VIII

[Malignant hemangioendothelioma: its microscopic structure, tissue markers and place among the soft-tissue sarcomas].

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108 tumors reckoned in the file of the N. N. Petrov Research Institute of Oncology as vascular neoplasms were studied microscopically and histochemically. Malignant hemangioendotheliomas showed formation of vascular structures (a microscopic sign) and expression of specific markers of the

Myofibroblastic sarcoma in meningioma: a new variant of "metaplastic" meningioma.

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The authors describe a mixed malignant dural tumor composed of meningioma and myofibroblastic sarcoma (MFS). The meningioma component displayed epithelial membrane immunoreactivity and interdigitating cellular processes with desmosomal junctions on electron microscopy. MFS cells were immunoreactive

Histogenesis of Ewing's sarcoma. An evaluation of intermediate filaments and endothelial cell markers.

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Four cases of Ewing's sarcoma, three in bone and one from an extraskeletal site, were studied immunohistologically using monospecific antibodies against intermediate filament proteins of keratin, vimentin, desmin and neurofilament types. All cases were also evaluated for the presence of Factor

A unique case of a benign disseminated angioproliferation combining features of Kaposi's sarcoma and diffuse dermal angioendotheliomatosis.

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A female patient undergoing chronic hemodialysis had disseminated, violaceous, and partly ulcerated plaques develop on the trunk. Lesions had erupted simultaneously over a period of 4 weeks and resolved within 5 months after steroid treatment. By histopathology, the papillary dermis was densely

Lymphaticovenous differentiation in Kaposi's sarcoma. Cellular phenotypes by stage.

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The histogenesis of Kaposi's sarcoma was investigated by immunohistochemical staining of 20 skin specimens that represented four main histologic stages. The early phase of Stage 1 contained lymphatic-like clefts lined by endothelial cells with thin, discontinuous basement membranes shown by

Primitive pelvic sarcoma resembling clear cell sarcoma of kidney.

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Clear cell sarcoma of kidney (CCSK) is an aggressive childhood renal tumor of unknown histogenesis that has not been reported to occur outside the kidney. The article describes an extrarenal neoplasm arising in the pelvic soft tissues of a 13-year-old boy that was composed predominantly of uniform

Pulmonary artery sarcoma with angiosarcoma phenotype mimicking pleomorphic malignant fibrous histiocytoma: a case report.

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Primary sarcomas of the major blood vessels can be classified based on location in relationship to the wall or by histologic type. Angiosarcomas are malignant neoplasms that arise from the endothelial lining of the blood vessels; those arising in the intimal compartment of pulmonary artery are rare.

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