Letter to the Editor: 'Decreasing Use of Radioactive Iodine for Low-Risk Thyroid Cancer in California, 1999 to 2015'.

摘要

In a retrospective study of patients with differentiated thyroid cancer (DTC) from the California Cancer Registry, Park et al. (1) showed that the rate of I-131 ablation decreased significantly from 67.4% in 1999 to 48.6% in 2015 for patients with localized tumors be- tween 2 and 4 cm (no extrathyroidal extension, lymph node, or distant metastases) after the implementation of the 2009 AmericanThyroidAssociation (ATA) guidelines. Theyconcludedthatmanypatientswithlow-riskDTCstill underwent potentially unnecessary I-131 ablation for tu- mors 2 to 4 cm with localized disease. However, many other factors should be considered before stratifying 2- to 4-cm localized tumors as low risk and before determining that I-131 ablation is unnecessary.