نتایج جستجو برای: paragangliomas
تعداد نتایج: 1098 فیلتر نتایج به سال:
The present study aimed at identifying the clinical, radiological and pathological characteristics of retroperitoneal paragangliomas, and determining the association between the tumor features and the prognosis of patients following surgery. A total of 34 patients with retroperitoneal paragangliomas, who underwent resection between November 1999 and December 2015, were included in the present r...
1 Resident physicians in Otorhinolaryngology, Hospital de Clínicas de Porto Alegre. 2 Ph.D. studies under course, Faculdade Federal de Ciências Médicas de Porto Alegre. 3 Ph.D. studies under course, Medical School, Federal University of Rio Grande do Sul. 4 Supporting Professor, Department of Ophthalmology and Otorhinolaryngology, Medical School, Federal University of Rio Grande do Sul. Affilia...
INTRODUCTION Genitourinary and retroperitoneal paragangliomas are infrequent tumors with bizarre presentation. A high index of suspicion is required to make a diagnosis in young hypertensive individuals. Our aim is to study the varied clinical presentations and management of these paragangliomas. Herein, we share our experience of clinical presentation, diagnosis, and management of these paraga...
Pheochromocytomas and paragangliomas are neuroendocrine tumors that occur in the context of inherited cancer syndromes in ∼30% of cases and are linked to germline mutations in the VHL, RET, NF1, SDHA, SDHB, SDHC, SDHD, SDHAF2 and TMEM127 genes. Although genome-wide expression studies have revealed some of the mechanisms likely to be involved in pheochromocytoma/paraganglioma tumorigenesis, the ...
BACKGROUND Mutations in the genes encoding B, C, and D subunits of the succinate dehydrogenase (SDH) are involved in the pathogenesis of familial paraganglioma (PGL) syndrome. Many subjects with apparently sporadic extra-adrenal paragangliomas are found to be carrier for SDH mutation. OBJECTIVE Here we describe four subjects with apparently sporadic extra-adrenal paragangliomas with newly ide...
BACKGROUND AND PURPOSE Paragangliomas are highly vascularized usually benign neoplasms arising from nerve tissue. Endovascular preoperative embolization is used to facilitate surgery but is often not complete, due to tiny feeding arteries not feasible for selective catheterization. Our purpose was to evaluate angiographic and clinical outcome using Onyx for percutaneous glomus tumor embolizatio...
1.2. Properties of M0,n ⊂ M0,n. (1.2.1) M0,n has a natural moduli interpretation, namely it is the moduli space of stable n-pointed rational curves. (1.2.2) Given power series f1(z), . . . , fn(z) which we think of as a one parameter family in M0,n one can ask: What is the limiting stable n-pointed rational curve in M0,n as z → 0 ? There is a beautiful answer, due to Kapranov [Ka1], in terms of...
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