Color flow Doppler sonography rapidly differentiates type I and type II amiodarone-induced thyrotoxicosis.

@article{Bogazzi1997ColorFD,
  title={Color flow Doppler sonography rapidly differentiates type I and type II amiodarone-induced thyrotoxicosis.},
  author={Fausto Bogazzi and Luigi Bartalena and Sandra Brogioni and Salvatore Mazzeo and Paolo Vitti and Andrea Burelli and Carlo Bartolozzi and E. C. Martino},
  journal={Thyroid : official journal of the American Thyroid Association},
  year={1997},
  volume={7 4},
  pages={541-5}
}
Amiodarone-induced thyrotoxicosis (AIT) occurs both in abnormal thyroid glands (nodular goiter, latent Graves' disease) (type I AIT) or in apparently normal thyroid glands (type II AIT). Differentiation of the two forms is crucial, because type I AIT responds well to methimazole and potassium perchlorate combined treatment, whereas type II AIT is effectively managed by glucocorticoids. Differential diagnosis is often difficult, although thyroid radioactive iodine uptake is usually low-to-normal… CONTINUE READING

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