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Malignant teratoma of the thyroid
  1. Rohan Bidaye1,
  2. Ashraf Mahmood1,
  3. Zainab Abdawn2 and
  4. Ijaz Ahmad1
  1. 1ENT Department, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
  2. 2Pathology Department, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
  1. Correspondence to Rohan Bidaye; rrbidaye{at}


Malignant thyroid teratoma in adults is a rare tumour with less than 40 cases reported worldwide. Our case is of a 29-year-old man who presented with a thyroid lump and compressive symptoms. He underwent multiple investigations before being diagnosed with a malignant thyroid teratoma. There are no established guidelines in the management of this tumour yet. In this case report, we discuss the diagnosis, treatment and follow-up of the patient and reflect on the published literature on this tumour.

  • chemotherapy
  • endocrine cancer
  • radiotherapy
  • head and neck surgery
  • thyroid disease

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  • Contributors First author: RB. Second author: AM. Third author: ZA. Fourth author: IA. This is to confirm that all the four authors have actively contributed to the article production. RB, ZA and IA were involved in the clinical management and planning of the article. RB and AM contributed to the literature review and write-up. RB and ZA provided the figures attached. AM, ZA and IA have proofread and made revisions before submission.

  • 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.

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