????? ??? ??, ?? ??? ??? ??? ? ?? ?? ??????. ???? ???? ??? ? ?? ?? ??? ?????.???? ??? ? ?? ??: ??? ??? ???? ???? ??? ? ????.??? ?? ??: ???? ??? ??? ? ?? ?? ??? ?? ???? ?????.???? ???? ?? ?????, ??, ?? ? ??(??)??? ???????.Hereditary paraganglioma-pheochromocytoma (PGL/PCC) syndromes are characterised by paragangliomas (tumors that arise from neuroen