 The registry will consist of patient data regarding basic demographics, history of prior neckchest surgery or radiation, parathyroid imaging, biochemical evaluation, intraoperative surgical findings, parathyroid pathology, and surgical outcomes within the first 6 months persistent disease, recurrent laryngeal nerve injury, and hypoparathyroidism. Data will be entered into REDCap with no PHI. The investigators expect to include 3000 patients in the registry 1000 from Duke. 