Selective Embolization of Thyroid Arteries for Preresection or Palliative Treatment of Large Cervicomediastinal Goiters

Background: The authors have applied the selective embolization of thyroid arteries in the treatment of voluminous cervicomediastinal goiters, especially in patients at high surgical risk or reluctant to undergo surgical intervention and radioiodine therapy. Method: Selective arteriography was used to embolize the thyroid arteries in 2 patients with voluminous hyperfunctioning cervicomediastinal goiters and mediastinal compressive symptoms. The first patient had already undergone unsuccessful radioiodine metabolic therapy and had severe left ventricular insufficiency contraindicating surgery. The second patient, despite having no contraindications, declined surgery and radioiodine metabolic therapy. Results: Radiological embolization markedly reduced the goiters in volume, resolved the compressive symptoms, and also normalized thyroid hyperfunction. The second patient needed a second embolization procedure because the embolized arterial branches had partly recanalized. Conclusion: Selective embolization of thyroid arteries can be successfully used to treat selected patients as a preoperative procedure and as an alternative to thyroid resection. Embolization can be repeated to achieve the required therapeutic aims.