{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,8]],"date-time":"2025-09-08T05:44:20Z","timestamp":1757310260083,"version":"3.40.4"},"reference-count":18,"publisher":"BMJ","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Reports"],"accepted":{"date-parts":[[2014,8,5]]},"abstract":"<jats:p>A 45 year-old woman who presented with non-specific neck and shoulder pain, was found to have mild hypercalcaemia, markedly elevated parathyroid hormone levels, and an irregular parathyroid gland on imaging. The patient underwent a parathyroidectomy and the pathology report came back positive for parathyroid carcinoma with muscular invasion. Parathyroid carcinoma is an exceptionally rare cause of primary hyperparathyroidism and can have a poor prognosis due to metastases and a high propensity to recur after resection. Reports of non-functioning parathyroid carcinomas tend to behave even more aggressively. Repeat imaging on this patient showed residual cancer present, so the patient underwent a second surgery with radical neck dissection and has since been doing very well postoperatively. Diagnosis and treatment is challenging and it is critical to continuously follow-up for recurrent disease.<\/jats:p>","DOI":"10.1136\/bcr-2014-204279","type":"journal-article","created":{"date-parts":[[2014,8,19]],"date-time":"2014-08-19T14:40:50Z","timestamp":1408459250000},"page":"bcr2014204279","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":7,"title":["Parathyroid carcinoma, a rare cause of primary hyperparathyroidism"],"prefix":"10.1136","volume":"2014","author":[{"given":"Adam","family":"Alperstein","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rajendra","family":"Bhayani","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2014,8,19]]},"reference":[{"key":"2025042706181727000_2014.aug19_1.bcr2014204279.1","doi-asserted-by":"publisher","DOI":"10.1002\/1097-0142(19820115)49:2<388::AID-CNCR2820490230>3.0.CO;2-F"},{"key":"2025042706181727000_2014.aug19_1.bcr2014204279.2","doi-asserted-by":"publisher","DOI":"10.1210\/jc.2012-4022"},{"key":"2025042706181727000_2014.aug19_1.bcr2014204279.3","doi-asserted-by":"publisher","DOI":"10.1210\/jc.2002-021467"},{"key":"2025042706181727000_2014.aug19_1.bcr2014204279.4","doi-asserted-by":"publisher","DOI":"10.1001\/archsurg.1979.01370280129019"},{"key":"2025042706181727000_2014.aug19_1.bcr2014204279.5","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1097-0142(19990801)86:3<538::AID-CNCR25>3.0.CO;2-K"},{"key":"2025042706181727000_2014.aug19_1.bcr2014204279.6","doi-asserted-by":"publisher","DOI":"10.1002\/cncr.22599"},{"key":"2025042706181727000_2014.aug19_1.bcr2014204279.7","doi-asserted-by":"publisher","DOI":"10.1210\/jc.2011-1571"},{"key":"2025042706181727000_2014.aug19_1.bcr2014204279.8","unstructured":"Rahbari R Kebebew E . 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