SDHB and hereditary pheochromocytoma-paraganglioma: Pheochromocytomas are present in several genetic syndromes [4,5], which include Von-Hippel–Lindau syndrome; multiple endocrine neoplasia Type 2 with the associated thyroid medullary carcinomas and hyperparathyroidism for Type 2a, or neuromas and a marfanoid appearance for Type 2b; Type 1 neurofibromatosis syndrome with multiple neurofibromas; and succinate dehydrogenase genetic syndromes (i.e., SDHB and SDHD) [4,5].