Clinicoradiological manifestations of paraganglioma syndromes associated with succinyl dehydrogenase enzyme mutation.

Insights Into Imaging
Brendan BarberIoannis Vlahos

Abstract

BACKGROUND: Paragangliomas are rare tumours derived from the autonomic nervous system that have increasingly been recognised to have a genetic predisposition. Mutations of the enzyme succinyl dehydrogenase (SDH) have proven to result in paraganglioma formation. There are four subunits (A through D) that form the enzyme complex and are associated with different genophenotypic expressions of disease. SDHB and SDHD mutations are more common, whereas SDHA and SDHC mutations are rare. Patients with SDHB mutations are prone to extra-adrenal pheochromocytomas, malignant disease and extra-paraganglial neoplasia, whereas SDHD mutations have a greater propensity for multiple, benign head and neck paragangliomas. METHODS: Diagnosis of a sporadic paraganglioma or pheochromocytoma should lead to a full genetic workup of the patient and family if SDH mutations are found. RESULTS: Further annual screening will be required depending on the mutation, which can have a significant impact on radiologists and the resources of the radiology department. CONCLUSION: We present our imaging experience with a series of patients with proven SDH mutations resulting in paragangliomas with a review of the literature.

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Citations

Sep 5, 2014·Clinical Nuclear Medicine·Maria Cristina Marzola, Domenico Rubello
Feb 26, 2013·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·J FruhmannT U Cohnert
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Sep 28, 2020·Current Problems in Diagnostic Radiology·Khushboo JhalaMark Hammer
Jul 9, 2021·Radiology. Cardiothoracic Imaging·Scott LandrethCristina Fuss

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