نتایج جستجو برای: paragangliomas
تعداد نتایج: 1098 فیلتر نتایج به سال:
We report a rare case of solitary paraganglioma arising from the small bowel mesentery, found in 70-year-old female who presented with abdominal pain. Paragangliomas are neuroendocrine, neural crest-derived tumors, most commonly adrenal medulla. While extra-adrenal paragangliomas arise diverse locations, mesenteric origins extremely rare. Our comprehensive review shows 35 previously documented ...
introduction paragangliomas are mostly localized in the adrenal medulla and they are usually pheochromocytomas, derived from the neural crest, but otherwise mesenteric paragangliomas are extremely rare tumors. case presentation in this article we represent a 59-year-old female with an abdominal mass and pain due to mesenteric paraganglioma. conclusions paragangliomas can occur as mesenteric tum...
INTRODUCTION Head and neck paragangliomas are rare tumours of a neuroendocrine nature. The aim of this study was to show our experience in the management of these kind of tumours. METHODS This was a retrospective study of head and neck paragangliomas diagnosed between 1978 and 2014. A total of 126 patients with 162 tumours were analysed. The paragangliomas included 88 jugulotympanic tumours, ...
Multiple paragangliomas of the head and neck are rare conditions. Carotid paragangliomas are most common multiple paragangliomas. Laryngeal paragangliomas are very rare neuroendocrine tumors and usually are seen as symptomatic solitary lesions. We present multimodality imaging findings of incidentally detected laryngeal paraganglioma in a woman with synchronous carotid body paraganglioma and po...
Paragangliomas are neoplasms of neural crest origin. In the head and neck, they uncommonly involve the larynx. The distinction between paragangliomas and other neuroendocrine tumors can be difficult. Precise diagnosis is important in order to optimize patient treatment. Diagnosis relies mostly on histopathologic examination followed by immunohistochemistry. Here we report a 77-year-old woman wi...
BACKGROUND The purpose of this study was to reflect our experience in the management of multicentric head and neck paragangliomas, including genetic study and counseling, diagnostic tools, types of treatment, and the need for monitoring. METHODS A retrospective review of 24 patients with multicentric paraganglioma, including a total of 60 paragangliomas: 37 carotid body tumors, 13 jugulotympa...
Sinonasal paragangliomas are very uncommon neuroendocrine tumors that can present as skull base lesions. Functional paragangliomas are exceedingly rare. They can be associated with genetic mutations that have been associated with increased risk of head and neck paragangliomas. We present a case of a rare functioning sinonasal paraganglioma of the skull base in a patient with distant history of ...
Paragangliomas of the head and neck are rare neoplasms presented as cervical mass, generally bilateral, that arise from chemoreceptors located at the carotid bifurcation (carotid body tumors), along the vagus nerve (vagal paragangliomas), and in the jugular fossa and tympanic cavity (jugulotympanic paragangliomas). They are typically asymptomatic at the beginning, highly vascular, slow-growing ...
Paragangliomas/pheochromocytomas are uncommon neuroendocrine tumors that arise from chromaffin cells located outside of the adrenal gland. Although cardiac paragangliomas have been observed in all heart chambers, most prevalent left-atrial paragangliomas, followed by aortic body tumors. Diagnosis paragangliomas/pheochromocytomas is mostly achieved with a multimodality approach because her clini...
Head and neck paragangliomas are tumors arising from specialized neural crest cells. Prominent locations are the carotid body along with the vagal, jugular, and tympanic glomus. Head and neck paragangliomas are slowly growing tumors, with some carotid body tumors being reported to exist for many years as a painless lateral mass on the neck. Symptoms depend on the specific locations. In contrast...
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