??? ??? ?? ? ? ?? ?? ??? ????? ??? ?? ??? ???? ??? ???? ?????.????? ??? ????? ???? ????.????? ???? ??? ??? ??? ???? ?????.??? ?? ??: ???? ??? ??? ? ?? ?? ??? ?? ???? ?????.?? ??? ?? ?? ??? ??? ??? ??? ??? ???. ?? ???? ??? ??? ?? ??? ?? ??? ??? ??? ???.Hereditary paraganglioma-pheochromocytoma (PGL/PCC) syndromes are characterized by paragangliomas