RET and pheochromocytoma: Consistently, 2/3 members of Family 2 carrying RET-G691S/S891A had elevated urinary normetanephrine levels (#VN 445.3 mcg/24 h, nv <390 μg/24 h and #SV 578 mcg/24 h, nv <354 μg/24 h), though no lesion suspicious for pheochromocytoma (PHEO) have been yet identified using specific imaging screening (CT scan, FDG PET and MIBG scintiscan).