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High suspicion for malignancy includes hypercalcaemia greater than 14\u2009mg\/dL, extremely high serum parathyroid hormone (PTH) levels, as well as large masses. Given the rarity of PC, it is challenging to design clinical trials for newer therapy. Currently, complete initial surgical excision of the tumour in high-risk patients offers the best chance of cure and prolonged disease-free survival in PC. In the absence of definite data, non-surgical therapies such as radiation and chemotherapy are not routinely recommended. For early detection of recurrence; long-term clinical follow-up with interval measurements of serum calcium and PTH is recommended. Localising studies of PC are helpful. Early screening for CDC73 mutation and multidisciplinary treatment by an endocrine\/ENT\/surgical oncology team is recommended.<\/jats:p>","DOI":"10.1136\/bcr-2018-225784","type":"journal-article","created":{"date-parts":[[2018,12,18]],"date-time":"2018-12-18T17:19:47Z","timestamp":1545153587000},"page":"e225784","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":7,"title":["Previously unreported deletion of CDC73 involving exons 1\u201313 was detected in a patient with recurrent parathyroid carcinoma"],"prefix":"10.1136","volume":"11","author":[{"given":"Geeti","family":"Mahajan","sequence":"first","affiliation":[{"name":"Division of Endocrinology, Fortis Memorial Research Institute, Gurgaon, Haryana, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alan","family":"Sacerdote","sequence":"additional","affiliation":[{"name":"Internal Medicine, Woodhull Medical Center, Brooklyn, New York, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2018,11,28]]},"reference":[{"key":"2025082800381968000_11.1.e225784.1","doi-asserted-by":"crossref","first-page":"506","DOI":"10.2478\/v10035-008-0072-8","article-title":"Parathyroid cancer - occurrence, diagnosis, treatment","volume":"80","author":"Gawrychowski","year":"2008","journal-title":"Pol Przegl Chir"},{"key":"2025082800381968000_11.1.e225784.2","unstructured":"Rahbari R , Kebebew E . 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