BMJ Case Reports 2018; doi:10.1136/bcr-2018-224877
  • Rare disease

Symptomatic hyperthyroidism in metastatic testicular mixed germ cell tumour

  1. Nida Khalid
  1. Internal Medicine, Rochester General Hospital, Rochester, New York, USA
  1. Correspondence to Dr Deep Shah, deepushah88{at}
  • Accepted 23 May 2018
  • Published 8 June 2018


This is a case of a young 34-year-old man who had symptomatic hyperthyroidism from an extremely high serum beta HCG level in the setting of a metastatic stage IIIC mixed germ cell tumour. The patient’s thyroid function normalised with treatment of the cancer as the beta HCG levels declined.


  • Contributors DS: responsible for writing, editing, planning and literature review of the case. NK: responsible for editing, literature review of the case and taking consent from the patient’s wife.

  • 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 Next of kin consent obtained.

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

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