Introduction. Recombinant human thyroid stimulating hormone (rhTSH) is approved for preparation of thyroid remnant ablation\nwith radioactive iodine (RAI) in low risk patients with well differentiated thyroid cancer (DTC).We studied the safety and efficacy\nof rhTSH preparation for RAI treatment of thyroid cancer patients with nodalmetastatic disease. Methods. A retrospective analysis\nwas performed on 108 patients with histopathologically confirmed nodal metastatic DTC, treated with initial RAI between January\n1, 2000, and December 31, 2007. Within this selected group, 31 and 42 patients were prepared for initial and all subsequent RAI\ntreatments by either thyroid hormone withdrawal (THW) or rhTSH protocols and were followed up for at least 3 years. Results. The\nresponse to initial treatment, classified as excellent, acceptable, or incomplete, was not different between the rhTSH group (57%,\n21%, and 21%, resp.) and the THW group (39%, 13%, and 48%, resp.;
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