The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Andrew E Rosenberg - One of the best experts on this subject based on the ideXlab platform.
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florid extravascular Papillary Endothelial Hyperplasia masson s pseudoangiosarcoma presenting as a soft tissue sarcoma
Archives of Pathology & Laboratory Medicine, 1993Co-Authors: Michael R Pins, Daniel I Rosenthal, D S Springfield, Andrew E RosenbergAbstract:Papillary Endothelial Hyperplasia (also known as Masson's pseudoangiosarcoma) is a hyperplastic proliferation of Endothelial cells that is usually an incidental finding within thrombosed dilated blood vessels or vascular tumors. Rare extravascular forms occur and can histologically closely mimic angiosarcoma. We report a case of extravascular Papillary Endothelial Hyperplasia that extensively involved a large, traumatic, deep soft-tissue hematoma in a 19-year-old man and clinically presented as a soft-tissue sarcoma. We also summarize characteristics of 314 cases of Papillary Endothelial Hyperplasia reported in the literature and identify 13 likely cases of the rare extravascular form.
Michael R Pins - One of the best experts on this subject based on the ideXlab platform.
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florid extravascular Papillary Endothelial Hyperplasia masson s pseudoangiosarcoma presenting as a soft tissue sarcoma
Archives of Pathology & Laboratory Medicine, 1993Co-Authors: Michael R Pins, Daniel I Rosenthal, D S Springfield, Andrew E RosenbergAbstract:Papillary Endothelial Hyperplasia (also known as Masson's pseudoangiosarcoma) is a hyperplastic proliferation of Endothelial cells that is usually an incidental finding within thrombosed dilated blood vessels or vascular tumors. Rare extravascular forms occur and can histologically closely mimic angiosarcoma. We report a case of extravascular Papillary Endothelial Hyperplasia that extensively involved a large, traumatic, deep soft-tissue hematoma in a 19-year-old man and clinically presented as a soft-tissue sarcoma. We also summarize characteristics of 314 cases of Papillary Endothelial Hyperplasia reported in the literature and identify 13 likely cases of the rare extravascular form.
Samy S Iskandar - One of the best experts on this subject based on the ideXlab platform.
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intravascular Papillary Endothelial Hyperplasia in a thrombosed renal allograft vein
Human Pathology, 1996Co-Authors: Craig H Steffee, Samy S IskandarAbstract:Intravascular Papillary Endothelial Hyperplasia (IPEH) is a benign Endothelial proliferation of unclear pathogenesis, usually associated with thrombus as an unusual mode of organization and occasionally coexisting with vascular neoplasms. A 65-year-old white woman with chronic renal disease caused by focal segmental glomerulosclerosis experienced the failure of a cadaveric renal allograft 10 days after implantation. Pathological manifestations in the resected graft included total infarction and thrombi in both the renal artery and vein, the latter of which showed typical histopathologic features of IPEH. Papillary formations with fibrinous cores lined by bland Endothelial cells surrounded fresh and organizing thrombus, and the proliferation had a highly cellular peripheral zone not readily recognizable as vascular. Immunohistochemical stains for factor VIII, CD34, and in particular CD31, however, confirmed the nature of both the Papillary and solid areas of the proliferation as vascular endothelium. We present the first report of this lesion in an allograft vessel, and we find its rapid development, in association with a thrombus of clinically discernable age, to be strong evidence supporting the hypothesis that IPEH represents an uncommon morphology of organizing thrombus.
Hideyuki Akaza - One of the best experts on this subject based on the ideXlab platform.
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a case of intravascular Papillary Endothelial Hyperplasia masson s tumor arising from renal sinus
Japanese Journal of Clinical Oncology, 1997Co-Authors: Akira Johraku, Yukihisa Saida, Naoto Miyanaga, Noritoshi Sekido, Hitoshi Ikeda, Norishige Michishita, Masachika Fujiwara, Masayuki Noguchi, Toru Shimazui, Hideyuki AkazaAbstract:A 55-year-old woman had a right renal tumor incidentally diagnosed by ultrasonography. CT revealed a perirenal low density mass 3 cm in diameter. Dynamic CT showed peripheral enhancement of the tumor in early phase and internal homogeneous enhancement in delayed phase. Since hemangioma was considered most likely, we performed tumor resection and spared the right kidney. The tumor was supplied by the superior ureteral artery from the right main renal artery which was considered to be derived from the renal sinus. The tumor was diagnosed as intravascular Papillary Endothelial Hyperplasia (Masson's tumor). This is the first report of intravascular Papillary Endothelial Hyperplasia existing in the perirenal space. Although preoperative diagnosis of intravascular Papillary Endothelial Hyperplasia is difficult, intra-operative pathology and kidney-sparing treatment should be considered in such a case.
Daniel I Rosenthal - One of the best experts on this subject based on the ideXlab platform.
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florid extravascular Papillary Endothelial Hyperplasia masson s pseudoangiosarcoma presenting as a soft tissue sarcoma
Archives of Pathology & Laboratory Medicine, 1993Co-Authors: Michael R Pins, Daniel I Rosenthal, D S Springfield, Andrew E RosenbergAbstract:Papillary Endothelial Hyperplasia (also known as Masson's pseudoangiosarcoma) is a hyperplastic proliferation of Endothelial cells that is usually an incidental finding within thrombosed dilated blood vessels or vascular tumors. Rare extravascular forms occur and can histologically closely mimic angiosarcoma. We report a case of extravascular Papillary Endothelial Hyperplasia that extensively involved a large, traumatic, deep soft-tissue hematoma in a 19-year-old man and clinically presented as a soft-tissue sarcoma. We also summarize characteristics of 314 cases of Papillary Endothelial Hyperplasia reported in the literature and identify 13 likely cases of the rare extravascular form.
