2018; Adrenal; Adrenalectomy; Adult; Alpha-blockers; Asian - Chinese; Beta-blockers; Blood pressure; Bone; CT scan; Calcium (serum); Dermatology; Female; Hong Kong; Hypercalcaemia; Hyperparathyroidism (primary); Hypertension; MIBG scan; March; Metanephrines; Metanephrines (plasma); Metanephrines (urinary); Neurofibromas; Neurofibromatosis; Noradrenaline; Norepinephrine; Normetanephrine; Osteoporosis; PTH; Palpitations; Parathyroid adenoma; Parathyroidectomy; Phaeochromocytoma; Propranolol; Resection of tumour; Sestamibi scan; Terazosin; Ultrasound scan; Unique/unexpected symptoms or presentations of a disease