RT Book, Section A1 Singer, Michael C. A1 Terris, David J. A2 Lalwani, Anil K. SR Print(0) ID 55770371 T1 Chapter 43. Parathyroid Disorders T2 CURRENT Diagnosis & Treatment in Otolaryngology—Head & Neck Surgery, 3e YR 2012 FD 2012 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-162439-8 LK accessmedicine.mhmedical.com/content.aspx?aid=55770371 RD 2024/04/19 AB The parathyroid gland is a key regulator of calcium homeostasis. While hyperparathyroidism is now most often diagnosed in asymptomatic patients, untreated it can have devastating effects on multiple organ systems. Primary hyperparathyroidism, the most common cause of hypercalcemia in nonhospitalized patients, is treated surgically in most cases.