ENO2 and neoplasm: Laboratory examination showed that tumor markers such as NSE and proGRP had remained within normal limits and showed elevation of the serum noradrenaline (1.12 ng/mL; normal range 0.10–0.50) and dopamine levels (0.04 ng/mL; 0–0.03), but MIBG scintigraphy displayed no uptakes in the right adrenal gland.