Functional activity of a thyroid nodule under the influence of stable iodide administration in a hyperthyroid patient.

In a thyrotoxic patient with nodular goiter treated with stable iodide and Carbimazole, a series of 131I scans was performed at different intervals for proposed 131I therapy. Originally, total uptake was suppressed and the node was evaluated as active. The same type of scan was seen repeatedly with uptake increasing for about 6 months following stable iodide withdrawal.

Differentiated thyroid cancer following radioiodide 131I therapy of hyperthyroidism--a case report.

Differentiated (papillary) thyroid cancer was detected 17 years following radioiodide 131I treatment for toxic multinodular goiter. 21 cases of thyroid cancers with previous 131 I therapy for hyperthyroidism were summarised. This combination is rare compared to the incidence of thyroid cancers following external irradiation.