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Case report
Parathyroid cyst: differential diagnosis
  1. Rita Silva1,
  2. Daniela Cavadas1,
  3. Carla Vicente2 and
  4. Jose Coutinho1
  1. 1General Surgery Department, Centro Hospitalar de Lisboa Central EPE, Lisboa, Portugal
  2. 2Centro Hospitalar de Torres Vedras, Lisboa, Lisboa, Portugal
  1. Correspondence to Dr Rita Silva; anasilvarita{at}


Parathyroid cysts are rare lesions of the cervical region and less frequently of the mediastinum. They occur mostly in women and are usually asymptomatic. They generally occur in the fourth and fifth decades of life and mainly are non-functioning. They commonly present as a neck mass that is found incidentally during surgery or in imaging test. Its importance lies in the difficulty in diagnosis, often confusing itself with thyroid pathology. The diagnosis is usually made intraoperatively, confirmed by histopathological examination.

The aim of this paper is to report a case of parathyroid cyst that mimics a thyroid nodule.

  • endocrinology
  • surgery
  • general surgery

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  • Contributors RS wrote the manuscript in consultation with DC, CV and JC.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent for publication Obtained.

  • Provenance and peer review Not commissioned; externally peer reviewed.