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      Thyrotoxicosis: an under-recognised aetiology

      1 , 2 , 1

      BMJ Case Reports

      BMJ Publishing Group

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          Abstract

          A 53-year-old woman presented for evaluation of dizziness, shortness of breath and chest pain. She was found to be in atrial fibrillation with rapid ventricular response that was determined to be caused by iodine-induced thyrotoxicosis (from a CT scan with intravenous contrast 2 months prior to presentation). Jod-Basedow syndrome (iodine-induced hyperthyroidism) is infrequently considered as a cause of thyrotoxicosis, even when typical risk factors are present. However, this patient did not have typical risk factors: she did not reside in an iodine deficient area, did not have a prior diagnosis of thyroid disorder or goitre, had never been treated with thyroid medications or medications known to cause thyroid dysfunction and she presented later than is typical with this syndrome (2 months after receiving iodinated contrast). She had complete resolution of hyperthyroidism and atrial fibrillation 2 weeks later with no recurrence over the following 7 months.

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          Author and article information

          Journal
          BMJ Case Rep
          BMJ Case Rep
          casereports
          bmjcasereports
          BMJ Case Reports
          BMJ Publishing Group (BMA House, Tavistock Square, London, WC1H 9JR )
          1757-790X
          2015
          20 May 2015
          : 2015
          Affiliations
          [1 ] Department of Community Health and Family Medicine, University of Florida , Gainesville, Florida, USA
          [2 ] University of Florida , Gainesville, Florida, USA
          Author notes
          [Correspondence to ] Dr John Malaty, malaty@ 123456ufl.edu
          Article
          PMC4442204 PMC4442204 4442204 bcr-2014-208119
          10.1136/bcr-2014-208119
          4442204
          25994428
          2015 BMJ Publishing Group Ltd
          Categories
          Article
          Reminder of Important clinical lesson
          1524
          Female
          51-70 years
          Black
          USA/Canada
          Case Report

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