What is association of radioactive iodine treatment for overactive thyroid with risk of cancer death?

This study is an extension of one that has followed patients in the United States and the United Kingdom treated for hyperthyroidism for nearly 70 years. Researchers sought to determine the association of doses of radioactive iodine absorbed by organs or tissue with overall and site-specific cancer death.
Source: EurekAlert! - Cancer - Category: Cancer & Oncology Source Type: news