Pheochromocytoma: An Approach To Diagnosis

Publication date: Available online 22 October 2019Source: Best Practice &Research Clinical Endocrinology &MetabolismAuthor(s): Emilia Sbardella, Ashley B. GrossmanAbstractPheochromocytomas are rare neuroendocrine chromaffin-derived tumors that arise within the adrenal medulla. They are usually benign, but if not diagnosed or if left untreated, they can have devastating consequences. Clinical consideration of the diagnosis is paramount, as they may have protean manifestations, and a high index of suspicion is essential if serious consequences are to be avoided.An accurate biochemical diagnosis is crucial for the management of these patients: either plasma or urinary metanephrines are both highly sensitive and specific if correctly employed, but knowledge of pre- and post-analytic interference is essential.Diagnostic imaging with cross-sectional CT and/or MRI offer high sensitivity in their detection, but lack specificity. The introduction of PET/CT/MR has led to a dramatic improvement in the localization of both pheochromocytomas and paragangliomas, together with the increasing availability of new functional imaging radionuclides. Optimal investigation and accurate diagnosis is best achieved at ‘centers of excellence’ with expert multidisciplinary teams.
Source: Best Practice and Research Clinical Endocrinology and Metabolism - Category: Endocrinology Source Type: research

Related Links:

ConclusionsAdding 3-MT to diagnosis model can improve diagnostic sensitivity to some extent, and the analysis of spot urinary MNs and 3-MT can provide reliable diagnostic information in a much shorter diagnostic time, it may reduce the medical expenses indirectly.
Source: Endocrine - Category: Endocrinology Source Type: research
Abstract Objective: The aim of this study was to investigate the expression of Snail, galectin-3, and IGF1R in benign and malignant pheochromocytoma and paraganglioma (PPGL) and explore their role in the diagnosis of malignant PPGL. Methods: We retrospectively collected and analyzed surgical tumor tissue from 226 patients initially diagnosed with PPGL who underwent surgery from Jan. 2009 to Jan. 2016 at West China Hospital, Sichuan University. We observed and quantified the expression of Snail, galectin-3, and IGF1R in paraffin-embedded samples by immunohistochemical staining. Results: The significant di...
Source: Biomed Res - Category: Research Authors: Tags: Biomed Res Int Source Type: research
We present the second case of a family with ade novo SDHB mutation.
Source: Familial Cancer - Category: Cancer & Oncology Source Type: research
Pheochromocytoma (PCC) and Paraganglioma (PGL) are rare neuroendocrine neoplasms. These tumors harbour disastrous consequences during surgery due to catecholamine hypersecretion if they are undiagnosed or prep...
Source: BMC Surgery - Category: Surgery Authors: Tags: Case report Source Type: research
Publication date: Available online 10 March 2020Source: Best Practice &Research Clinical Endocrinology &MetabolismAuthor(s): Alexandre Buffet, Nelly Burnichon, Judith Favier, Anne-Paule Gimenez-Roqueplo
Source: Best Practice and Research Clinical Endocrinology and Metabolism - Category: Endocrinology Source Type: research
CONCLUSIONS: The data here demonstrate that targeting redox homeostasis as a cancer vulnerability with pharmacologic ascorbic acid is a promising therapeutic strategy for SDHB-mutated PCPGs. PMID: 32152203 [PubMed - as supplied by publisher]
Source: Clinical Cancer Research - Category: Cancer & Oncology Authors: Tags: Clin Cancer Res Source Type: research
This review serves as a primer on contemporary neuroendocrine neoplasm classification, with an emphasis on gastroenteropancreatic well-differentiated neuroendocrine tumors. Topics discussed include general features of neuroendocrine neoplasms, general neuroendocrine marker immunohistochemistry, the distinction of well-differentiated neuroendocrine tumor from pheochromocytoma/paraganglioma and other diagnostic mimics and poorly differentiated neuroendocrine carcinoma from diagnostic mimics, the concepts of differentiation and grade and the application of Ki-67 immunohistochemistry to determine the latter, the various WHO cl...
Source: Surgical Oncology Clinics of North America - Category: Surgery Authors: Source Type: research
Luconi Chinopoulos Patocs Pheochromocytoma/paragangliomas (Pheo/PGL) are rare endocrine cancers with strong genetic background. Mutations in the SDHB subunit of succinate dehydrogenase (SDH) predispose patients to malignant disease with limited therapeutic options and poor prognosis. Using a host of cellular and molecular biology techniques in 2D and 3D cell culture formats we show that SDH inhibition had cell line specific biological and biochemical consequences. Based on our studies performed on PC12 (rat chromaffin cell line), Hela (human cervix epithelial cell line), and H295R (human adrenocortical cell li...
Source: Cancers - Category: Cancer & Oncology Authors: Tags: Article Source Type: research
AbstractPheochromocytomas and paragangliomas (PPGLs) generally grouped together are rare catecholamine-secreting endocrine tumors. Symptoms of catecholamine excess are non-specific and therefore a high index of suspicion in children with sustained hypertension, family history of endocrine tumors, or features of syndromes associated with PPGLs leads to a timely diagnosis and treatment. Free  metanephrines in the plasma or 24-h urine are the preferred tests to establish catecholamine excess. Considerations for false-positive conditions improve diagnostic yield and accuracy. Functional imaging, targeting either spec...
Source: Pediatric Nephrology - Category: Urology & Nephrology Source Type: research
chi T Abstract Hereditary predispositions are responsible for more than 30% of or paraganglioma. Their identification is essential to optimize medical care and to offer an appropriate screening to relatives. To date, there are more than 15 known paraganglioma/pheochromocytoma predisposing genes. The most frequently involved are those encoding the succinate dehydrogenase (SDHx), accounting for half of cases and the VHL gene, causing the Von Hippel Lindau syndrome and representing approximately 20% of genetically determined cases. Patients with SDHB genes mutations have a higher risk of metastatic disease. An oncoge...
Source: Annales de Pathologie - Category: Pathology Authors: Tags: Ann Pathol Source Type: research
More News: Brain | Endocrinology | Neurology | Paraganglioma | Pheochromocytoma