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Thrombocytopaenia and thyroiditis: coincidence?
  1. Sara Fonseca1,
  2. Catarina Lacerda2,
  3. Ines Ganhão2 and
  4. Sofia Castro2
  1. 1 Pediatrics, Centro Hospitalar São João, Porto, Portugal
  2. 2 Pediatrics, Centro Hospitalar Barreiro Montijo, Barreiro, Portugal
  1. Correspondence to Dr Sara Fonseca, sara_fonseca7{at}


Thrombocytopaenia can be associated with an autoimmune mechanism. Immune thrombocytopaenia can be associated with thyroid autoimmune disease. The authors present a case of a teenager with a history of thrombocytopaenia who complained of tiredness. Laboratory investigation showed thyroid autoantibodies. The co-existence of thrombocytopaenia and thyroiditis lead to further investigation and antibodies against platelet glycoprotein IIbIIIa were found. This case illustrates the association of the overlap aspects between thyroid and platelet autoimmunity.

  • thyroid disease
  • haematology (incl blood transfusion)
  • immunology

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  • Contributors SF, CL, IG and SC had a substantial intellectual contribution in the writing of the article and participated in writing the article, revising versions and reviewing critical content and approving the final version. SF, CL, IG and SC participated in the planning, conduct, reporting, conception and design of the work.

  • 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.

  • Patient consent for publication Obtained.

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