[False positive vascular increased uptake during cervico-thoracic radioiodine scan]

The total body radioiodine 131 scan is an important tool for the postoperative management of thyroid carcinomas. However, it has multiple false positives. Congenital or acquired vascular abnormalities such as ectasis or aneurism can be responsible for an increased uptake during the whole body radioiodine I[131] scan because of stagnation of the iodine and because of its delayed elimination when these malformations are present. We report the case of such a false positive

rapeutic efficiency of iodine 131 in thyroid adenoma-About 59 cases

Our study dealt with 81 patients treated by iodine 131 for autonomous goiter. We have followed 59 patients during a year approximately.The global therapeutic efficiency is of 73% and the risk of hypothyroidism is very weak. The administration of a high activity [> 15mCi] of iodine allows go get a faster recovery, a better therapeutic efficiency and permits to reduce the number of cures [therefore, to reduce the irradiation of the disease], nevertheless, the risk of hypothyroidism is very slight. The advantages of metabolic rediotherapy [low cost, facility of administration, efficiency] make it preferable to surgery, above all with patients that are more than 40 years old, for whom the radiation risk is practically of no account [hereditary diseases, cancer]