Endocrine Abstracts

Background: Pheochromocytomas (PHEO) and paragangliomas (PGL) are rare neuroendocrine tumors that can lead to life-threatening conditions. The diagnosis of PHEO/PGL is established by measuring normetanephrine and metanephrine. Biochemical detection usually precedes clinical diagnosis of PHEO/PGL by several years. Co-occurrence of cyanotic congenital heart disease (CCHD) and PHEO/PGL has been reported but potential association remains unclear. We aimed to compare plasma metanep...