Comprehensive biochemical evaluation was normal: 24 h urinary 5-hydroxyindoleacetic acid 6 mg/d (normal 0-15), chromogranin A 50 ng/mL (normal 0-187), plasma metanephrine 0.12 nmol/L (normal 0.00-0.49), and normetanephrine 0.68 nmol/L (normal 0.00-0.89), excluding pheochromocytoma. Here, CHGA is linked to hereditary pheochromocytoma-paraganglioma.