Endocrine Abstracts

Introduction: Hyperparathyroidism is a disease characterized by excessive secretion of parathyroid hormone (PTH). There are three main etiologies: primary (PHPT), secondary (SHPT) and tertiary hyperparathyroidism (THPT). PHPT is characterized by abnormal regulation of PTH secretion by calcium, resulting in hypersecretion of PTH relative to the serum calcium concentration. SHPT is the overproduction of PTH in context of hypocalcemia, most frequently because of vitamin D deficie...