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Thyroid disease in patients with idiopathic thrombocytopenia: a cohort study

Adriana G Ioachimescu1, Antoine Makdissi, Alan Lichtin

  • 1Department of Endocrinology, Diabetes, and Metabolism, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA.

Thyroid : Official Journal of the American Thyroid Association
|September 25, 2007
PubMed

Insights

The prevalence of hypothyroidism is higher in patients with idiopathic thrombocytopenia (ITP). Routine thyroid function tests are recommended for ITP patients, though thyroid treatment did not durably improve platelet counts.

Area of Science:

  • Endocrinology
  • Hematology

Background:

  • Idiopathic thrombocytopenia (ITP) is an autoimmune disorder characterized by low platelet counts.
  • Thyroid disease, particularly autoimmune thyroid conditions, shares immunological mechanisms with ITP.

Purpose of the Study:

  • To determine the prevalence of thyroid disease in patients diagnosed with ITP.
  • To evaluate the impact of treating thyroid dysfunction on platelet counts in ITP patients.

Main Methods:

  • Retrospective cohort study.
  • Analysis of 80 patients with ITP from a tertiary care center (1988-2005).
  • Assessment of thyroid function tests and correlation with platelet counts.

Main Results:

  • 20% of ITP patients (16/80) exhibited abnormal thyroid function (6 hyperthyroidism, 10 hypothyroidism).
  • Autoimmune thyroid disease was confirmed in 75% of tested cases.
  • Transient platelet count increases were observed in 3 patients after achieving euthyroid status, but no durable improvement in thrombocytopenia.

Conclusions:

  • Hypothyroidism is more prevalent in ITP patients than in the general population.
  • Routine thyroid function screening is advisable for individuals with ITP.
  • Treatment of thyroid disease does not significantly alter the long-term prognosis of ITP.
Abstract

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