My frnd had an thyrod cncr opration last yr n she is gong for a kind of radioactive test is there anything to wry? is it curable?

Yes: Although every case is different, thyroid cancer is one of the most likely cancers to be cured by surgery.

Radioactive iodine: The thyroid takes up iodine, and most thyroid cancers take it up. Therefore the radioactive iodine gets into the tumor and kills it. The test is a lower does of radioiodine to see if there is any thyroid or tumor left. Other tests are important: ultrasound, blood thyroglobulin. An endocrinologist should be involved in the decisions.