Thyrotoxicosis: an under-recognised aetiology
#MMPMID25994428
Dave A
; Ludlow J
; Malaty J
BMJ Case Rep
2015[May]; 2015
(?): ? PMID25994428
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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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