Intrapericardial paragangliomas (pheochromocytomas): imaging features.
نویسندگان
چکیده
منابع مشابه
Pheochromocytomas and secreting paragangliomas
Catecholamine-producing tumors may arise in the adrenal medulla (pheochromocytomas) or in extraadrenal chromaffin cells (secreting paragangliomas). Their prevalence is about 0.1% in patients with hypertension and 4% in patients with a fortuitously discovered adrenal mass. An increase in the production of catecholamines causes symptoms (mainly headaches, palpitations and excess sweating) and sig...
متن کاملCurrent trends in functional imaging of pheochromocytomas and paragangliomas.
Most pheochromocytomas/paragangliomas should be evaluated with anatomical imaging (computed tomography or magnetic resonance imaging) followed by functional imaging (nuclear medicine modalities). Functional imaging assures that the tumor is indeed a pheochromocytoma/paraganglioma and enables more thorough localization, especially detecting as many lesions as possible (in particular for metastat...
متن کاملMolecular markers of paragangliomas/pheochromocytomas
Paragangliomas/pheochromocytomas comprise rare tumors that arise from the extra-adrenal paraganglia, with an incidence of about 2 to 8 per million people each year. Approximately 40% of cases are due to genetic mutations in at least one out of more than 30 causative genes. About 25-30% of pheochromocytomas/paragangliomas develop under the conditions of a hereditary tumor syndrome a third of whi...
متن کاملUpdate on Paragangliomas and Pheochromocytomas.
Genomic studies in the recent decades lead to the identification of new genetic mutations that have been shown to play detrimental roles in the formation of pheochromocytoma or paraganglioma. The majority of these genetic mutations detected affect two major cellular pathways - pseudo hypoxic pathway and kinase signalling pathway. Genetic mutations also resulted in syndromes related to paragangl...
متن کاملParagangliomas/Pheochromocytomas: Clinically Oriented Genetic Testing
Paragangliomas are rare neuroendocrine tumors that arise in the sympathetic or parasympathetic nervous system. Sympathetic paragangliomas are mainly found in the adrenal medulla (designated pheochromocytomas) but may also have a thoracic, abdominal, or pelvic localization. Parasympathetic paragangliomas are generally located at the head or neck. Knowledge concerning the familial forms of paraga...
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ژورنال
عنوان ژورنال: American Journal of Roentgenology
سال: 1997
ISSN: 0361-803X,1546-3141
DOI: 10.2214/ajr.168.1.8976931