Patients with DTC presenting with distant metastases have a worse outcome if aged over 70, have poorly differentiated tumours or have Hürthle cell variant. Despite their unfavourable prognosis, a dramatic improvement in survival was observed in the most recent era (1991-2002).
From the published data, it is not possible to reliably determine whether ablation success rates using 30 mCi are similar to using 100 mCi. Large randomized trials are needed to resolve the issue and guide clinical practice.
A successful ablation is strongly dependent on the absorbed dose to the thyroid remnant. Dosimetry-based personalized treatment can prevent both sub-optimal administrations, which entails further radioiodine therapy, and excessive administration of radioactivity, which increases the potential for radiation toxicity.
Background and aims: To report our experience and review the literature of thyroid cancer obstructing the great veins in the neck, highlighting clinical aspects and response to treatment.
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