نتایج جستجو برای: perivascular wall tumors pwts
تعداد نتایج: 349301 فیلتر نتایج به سال:
Inter- and intra-patient variations in tumor microenvironment of serous ovarian cancer are largely unexplored. We aimed to explore potential co-regulation of tumor stroma characteristics, analyze their concordance in primary and metastatic lesions, and study their impact on survival. A tissue microarray (TMA) with 186 tumors and 91 matched metastases was subjected to immunohistochemistry double...
Defined as a family of scarce mesenchymal neoplasm which distinctively co-express melanocytic markers and muscle markers, perivascular epithelioid cell tumors (PEComas) have been reported almost everybody site. Perivascular epithelioid cell tumors-not otherwise specified (PEComas-NOS) arising in the gastrointestinal (GI) tract are still restricted into sporadic case reports. Herein we present a...
Perivascular Epithelioid Cell Tumors (PEComas) are a family of rare neoplasms defined as mesenchymal tumors composed of histologically and immunohistochemically distinctive perivascular epithelioid cells [1]. Pea et al. first noted this unusual cell type in both renal angiomyolipoma (AML) and clear-cell “sugar” tumor (CCST) of the lung [2]. This generated the concept of a family of neoplasms co...
Perivascular epithelioid cell tumors (PEComas) of gastro intestinal tract are very rare, with only few cases reported in the literature. The PEComas are a family of rare mesenchymal tumors characterized by perivascular epithelioid cell differentiation. We herein report our experience with a patient who had a primary gastric PEComa that was diagnosed by an expert pathologist review of the excise...
Histologic and immunohistochemical changes of the lung vascular and perivascular structures in 37 clinical and paraclinical COBP diagnosed were studied. We noted the deterioration of an important part of the pulmonary capillary network because of the destruction of interalveolar septae, with an intense vascular congestion within restant capillaries. The venules and arterioles have had a fibrosi...
clear cell variant of ependymoma is almost exclusively located in the supratentorial region. only few cases of this tumor that located in the spinal cord have been reported. here we report one case of intramedullary clear cell ependymoma of the lumbar spinal cord. in microscopic examination, the tumor cells were round to oval with moderate amounts of clear cytoplasm and centrally located large ...
As glioma cells infiltrate the brain they become associated with various microanatomic brain structures such as blood vessels, white matter tracts, and brain parenchyma. How these distinct invasion patterns coordinate tumor growth and influence clinical outcomes remain poorly understood. We have investigated how perivascular growth affects glioma growth patterning and response to antiangiogenic...
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