10 rezultātiem
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
This study reviews data on the histogenesis of Kaposi's sarcoma and angiosarcoma derived from clinical features, histology, electron microscopy, enzyme histochemistry, and immunochemistry of both diseases. Their hemorrhagic clinical appearance contrasts the predominantly lymphatic histologic
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
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
Targetoid haemosiderotic haemangioma (THH) can be differentiated from other angiomatous lesions by the characteristic findings on clinical and histological examination. Clinically the solitary lesion is suggestive of a melanocytic or angiomatous origin, surrounded by a haemorrhagic halo in the acute
OBJECTIVE
To describe the clinicopathological features of 33 aneurysmal fibrous histiocytomas (AFH), including five cases with a haemangiopericytoma-like pattern.
METHODS
Thirty three cases of AFH were studied by using routine histology and immunohistochemistry for factor XIIIa, the "cell activity
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.
We report the clinical and pathological features of nine distinctive, but relatively unknown, vascular tumors of infancy and childhood presenting as soft tissue masses often associated with locally aggressive disease, lymphangiomatosis and Kasabach-Merritt syndrome. The patients, four males and five
Angiomatous lesions of the lung are uncommon and not well characterized. We describe nine cases of a distinct lymphatic vascular lesion that we have termed "diffuse pulmonary lymphangiomatosis." Extrathoracic lymphangiomatous lesions were not identified. The patients comprised seven males and two
The cellular mechanisms underlying normal and pathological endometrial bleeding are not well understood, although abnormalities in the structure of endometrial blood vessels may lead to menstrual disorders. Endothelial cells in different organs are heterogeneous and differ in structure, function,