Abstract
Pheochromocytomas (PCC) and paragangliomas (PGL) are tumours occurring in the adrenal medulla and in extra-adrenal paraganglia, respectively. They have long been associated with familial occurrence and several syndromes had been described in which PCC formed an important component, including multiple endocrine neoplasia type 2, von Hippel-Lindau disease and neurofibromatosis type
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