This article discusses the role of external beam radiotherapy (XRT) in the management of
well-differentiated thyroid cancer (WDTC), medullary thyroid cancer, and anaplastic thyroid
cancer. Although there are no randomized controlled studies on the use of XRT in thyroid
cancer, provided evidence supports its use to treat gross disease after surgery or
unresectable cancer and its use as an adjuvant after resection of a known disease in WDTC,
and to a lesser extent, its use in medullary thyroid cancer. The use of XRT for the palliation of …