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  • 1
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Amiodarone-associated thyrotoxicosis, often clinically mild and resolutive after amiodarone discontinuation or under medical therapy, is sometimes drug unresponsive and not uncommonly follows a dramatic, even fatal course. Therefore, we considered a surgical solution in 15 severely amiodarone-associated thyrotoxic patients. Twelve men and three women (mean age 68 years, range 50–84 years) underwent radical thyroidectomy for clinical and biologically proved amiodarone-associated thyrotoxicosis. In six surgery was the first-line therapeutic option. In the other nine thyroidectomy seemed unavoidable considering the unresponsiveness to medical therapy and rapid deterioration of the patients’ clinical condition, with life-threatening cardiac failure in three. In every patient surgery was conducted without immediate or delayed complications. Total thyroidectomy proved uniformly, definitively, and rapidly effective in controlling thyrotoxicosis in all patients, with a spectacular reversal of cardiac failure in the three most critical cases. Surgery was beneficial to our 15 patients and undoubtedly life-saving in the three most worrying cases. These results suggest that thyroidectomy should be more liberally regarded as an interesting alternative to conventional, but unpredictably effective, medical therapies.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    World journal of surgery 17 (1993), S. 622-626 
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'hyperthyroïdie induite par l'amiodarone est généralement modérée et disparaît lors de l'arrêt du médicament. Néanmoins, quelques cas de thyrotoxicose, menacant le pronostic vital, ont été décrits. Les traitements classiques, tels que les antithyroïdiens de synthèse ou les corticoïdes sont habituellement sans effet ou ne modifient en rien l'évolution dramatique de la crise toxique. C'est en raison de cette inefficiacité bien établie du traitement médical, surtout chez les patients ayant une maladie thyroïdienne négligée ou ignorée, que nous avons décidé de proposer une solution chirurgicale pour ces patients. Nous rapportons ici une séries de neuf patients qui ont eu une thyroïdectomie totale ou sub-totale comme traitement, et pour cinq d'entre eux, de première intention. La thyrotoxicose a diminué rapidement après la cure chirurgicale, et l'évolutionn postopératoire a été simple. La cure chirurgicale a l'avantage d'être immédiatement efficace, avec un risque de récidive quasi nul, et d'être la seule modalité thérapeutique qui permette de continuer le traitement par l'amiodarone lorsque celui-ci est indiqué pour contrôler une arythmie menacante.
    Abstract: Resumen El hipertiroidismo inducido por amiodarone ha sido descrito, en la mayoría de los casos, como una alteración leve de la función tiroidea que returna a sus niveles normales una vez que la droga es descontinuada. Sin embargo, también se han informado casos de tiroxicosis muy graves, capaces de poner en peligro la vida del paciente. Las modalidades convencionales de tratamiento, tales como las drogas antitiroideas (tionamide) y los corticosterides, generalmente no son efectivos o fallan en cuanto a modificar la evolución de la crisis hipertiroidea. Tal ineficacia de la terapia médica, especialmente en pacientes con enfermedad tiroidea previa desconocida o no tratada, nos ha llevado a intervenir quirúrgicamente. Informamos un grupo de nueve paciente que fueron sometidos a tiroidectomia total o casi total como la modalidad primaria de tratamiento en cinco de ellos. La operación dio como resultado la rápida resolución de la tiroxicosis con recuperación libre de complicaciones. Este aproche tiene la ventaja de un inmediato y eficaz resultado, un bajo riesgo de recurrencia y, por último, parece ser la única forma de tratamiento que permite continuar la terapia con amiodarone cuando esta droga es requerida para el control de una arritmia potencialmente letal.
    Notes: Abstract Amiodaroneinduced hyperthyroidism has on most instances been reported as mild, and thyroid functions return to normal after discontinuation of the drug. Nevertheless, lifethreatening amiodaroneinduced thyrotoxicosis has also been described. Conventional treatments such as antithyroid drugs (thionamide) and corticosteroids are essentially ineffective or fail to alter the dramatic course of the thyroid crisis. This limited effectiveness of medical therapy, particularly in patients with previously neglected or unknown thyroid disease, prompted us to intervene surgically. We report a series of nine patients who underwent total or neartotal thyroidectomy as a firstline therapy for five of them. Surgery resulted in rapid resolution of thyrotoxicosis with an uneventful postoperative course. This approach has the advantage of immediate effectivity, low risk of relapse, and appears to be the only treatment that permits continued therapy with amiodarone when the drug appears needed to control a lifethreatening arrhythmia.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Thyrotoxicosis is the clinical syndrome that results when tissues are exposed to high levels of circulating thyroid hormones. In most instances thyrotoxicosis is due to hyperthyroidism, a term reserved for disorders characterized by overproduction of thyroid hormones by the thyroid gland. Nevertheless, thyrotoxicosis may also result from a variety of conditions other than thyroid hyperfunction. The present report focuses on the etiologies, pathophysiology, and treatment of iatrogenic thyrotoxicosis. Iatrogenic thyrotoxicosis may be caused by (1) subacute thyroiditis (a result of lymphocytic infiltration, cellular injury, trauma, irradiation) with release of preformed hormones into circulation; (2) excessive ingestion of thyroid hormones (“thyrotoxicosis factitia”); (3) iodine-induced hyperthyroidism (radiologic contrast agents, topical antiseptics, other medications). Among these causes of iatrogenic thyrotoxicosis, that induced by the iodine overload and cytotoxicity associated with amiodarone represents a significant challenge. Successful management of amiodarone-induced thyrotoxicosis requires close cooperation between endocrinologists and endocrine surgeons. Surgical treatment may have a leading yet often underestimated role in view of the potential life-threatening severity of this disease, whereas others kinds of iatrogenic thyrotoxicosis are usually treated conservatively.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1619-7089
    Keywords: Fluorine-18 fluorodeoxyglucose ; Positron emission tomography ; Primary hyperparathyroidism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Fluorine-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) imaging was performed in seven consecutive patients with primary hyperparathyroidism to preoperatively locate parathyroid adenomas. Foci of FDG accumulation corresponding to abnormal parathyroid tissue were observed in two out of nine surgically excised parathyroid adenomas. It was concluded that FDG PET imaging demonstrated a too low sensitivity for systematic preoperative detection and localization of parathyroid glands causing primary hyperparathyroidism.
    Type of Medium: Electronic Resource
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