[Differentiated thyroid carcinoma--how to improve the long-term results? Twenty-five-year outcomes of 850 patients].

About 4000 people are diagnosed with thyroid carcinoma each year in France and as many as one in three adult patients have thyroid nodules on sonography. Nine in ten cases are differentiated (DTC). DTC may recur in the neck or metastasize very late, and final outcomes should therefore only be assessed after at least 20 years of follow-up.