High Radioactive Iodine Uptake Despite a Fully Suppressed TSH in a Patient with Thyroid Cancer

摘要

A20-yr-old woman presented with a history of heat in-tolerance,tremors,andpalpitations.A2-cmleft,levelIII,cervicallymphnodewaspalpated.ThyroidfunctiontestsconfirmedhyperthyroidismduetoGraves’disease:thyroid-stimulatingIg(TSI),4.7IU/liter(normal,?1.3IU/liter);andthyroid-bindinginhibitingIg,27IU/liter(normal,?1.37IU/liter).Afine-needleaspirationofthelymphnoderevealedpap-illary thyroid cancer. A total thyroidectomy and a left-sidedneckdissectionwereperformed(finalpathology:papillarycan-cerwithdiffusehyperplasiaconsistentwithGraves’disease).