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ulex/hémorragie
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Hepatic sinusoidal endothelium: Ulex lectin binding.
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The sinusoidal endothelial cells of human liver can be identified by light and electron microscopy, but there appear to be no specific immunocytochemical markers of these cells. Among specific markers available for vascular endothelial cells in general, Ulex europaeus I lectin (UEA I) is the most
Portal hypertension and hepatic sinusoidal Ulex lectin binding.
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Ulex europaeus 1 lectin (UEA1) has previously been shown to bind to hepatic sinusoidal endothelium in cirrhotic liver. This study was undertaken to determine the relationship between UEA1 sinusoidal binding and hepatic venous pressure gradient in patients with portal hypertension. Twenty one liver
An immunocytochemical study of the germinal layer vasculature in the developing fetal brain using Ulex europaeus 1 lectin.
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The characteristics of the germinal matrix vasculature were studied in the developing fetal brain using immunocytochemical methods. A preliminary comparative immunocytochemical study was made on six fetal brains to compare endothelial staining by Ulex europaeus I lectin with that of antibody to
Massive hemorrhagic functional adrenal adenoma histologically mimicking angiosarcoma. Report of a case with immunohistochemical study.
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We report the case of a massive hemorrhagic/thrombosed functional adrenal adenoma, a very uncommon mass lesion of the adrenal gland. The lesion contained large areas that histologically mimicked the pattern of an angiosarcoma. Immunoperoxidase staining confirmed that the vascular lining cells were
Diffuse pulmonary haemorrhage accompanied by haemothorax as a rare presentation of primary lung angiosarcoma.
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Primary pulmonary angiosarcoma is an extremely rare disease. Chest computed tomography demonstrates solitary or multifocal lesions, sometimes associated with ground-glass opacities or pleural effusion. Diagnosis is based on histological examination that reveals spindle-shaped epithelioid cells with
Endometrial vascular development in heavy menstrual bleeding: altered spatio-temporal expression of endothelial cell markers and extracellular matrix components.
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Are there any phenotypic and structural/architectural changes in the vessels of endometrium and superficial myometrium during the normal menstrual cycle in healthy women and those with heavy menstrual bleeding (HMB)?
Spatial and temporal differences in protein levels of endothelial cell (EC) markers
Blood group H(O) antigen in normal, dysplastic and carcinomatous esophageal epithelium.
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Variation of the binding Ulex europaeus agglutinin-I (Ulex-I), a lectin specific for blood group H(O) substance, was examined in normal, dysplastic and cancerous esophageal epithelium from 43 instances of carcinoma by means of the lectin- antilectin peroxidase-antiperoxidase method. The normal
Angiosarcoma of the tongue: report of a case with immunohistochemical findings.
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A case report of angiosarcoma of the tongue is presented. The specimen revealed single and clustered large, pleomorphic, and spindle-shaped cells with a markedly hemorrhagic background. Tumor cells showed expression of thrombomodulin and E-selectin, but no expression of Factor VIII-related antigen,
[Vascular eccrine giant spiradenoma--a case report with histology and immunohistology of a rare variant of benign sweat gland tumors].
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Giant vascular eccrine spiradenoma (GVES) is a rare variant of benign tumors of the sweat glands, which differs from common eccrine spiradenoma in both its size and vascularity. Clinically as well as macroscopically, this intradermal or subcutaneous encapsulated tumor might be mistaken for an
Angiosarcoma of the larynx.
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The morphological and immunohistochemical features of a laryngeal angiosarcoma are described. Initially, the tumour was interpreted as a poorly differentiated squamous cell carcinoma. The laryngectomy specimen contained an extensive and haemorrhagic tumour consisting of irregular and dissecting
Benign lymphangioendothelioma.
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We have studied eight cases of an acquired lymphatic endothelial lesion for which we propose the name "benign lymphangioendothelioma." The lesions developed as solitary, slowly extending, erythematous macules and plaques, usually occurring on the extremities or the shoulders in adolescents or
Multifocal epithelioid angiosarcoma of bone: a potential pitfall in the differential diagnosis with metastatic carcinoma.
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A case of multifocal epithelioid angiosarcoma of the femur, tibia, fibula, and astragalus in a 54-year-old man is reported. The tumor was composed of nests and cords of malignant cells with epithelioid morphology, with foci of vascular differentiation, necrosis, and hemorrhage. By
Hemangiopericytoma of the head and neck: a report of four cases and a literature review.
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Hemangiopericytoma is an infrequent vascular tumor that rarely appears in the head and neck. The nasal cavity and the paranasal sinuses are most often involved. Four cases are added to the literature and some important features are stressed. The clinical presentation is aspecific. Diagnosis is made
[Vascular tumors of the liver. Morphology, differential diagnosis, prognosis].
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A group of 5 primary angiomas of the liver (4 angiosarcomas, 1 cavernous hemangioma) was studied. Classification, differential diagnosis and pathogenesis are discussed. Angiosarcomas may be caused by exposure to thorotrast (2 of our 4 tumors) or of polyvinylchloride. Highly cellular tumors with a
An assessment of human epidermal repair in elderly normal subjects using immunohistochemical methods.
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The purpose of this study was to document a timetable for selected events of epidermal repair in standard partial thickness incised wounds on the legs of normal elderly human subjects. A Simplate-II bleeding-time device was used for producing the wounds, and immunohistochemical techniques were
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