Inclusion Criteria:  Patients diagnosed with DTC (differentiated thyroid carcinoma) Initial treatment by total thyroidectomy Treatment with RIT after physiological stimulation of thyroid-stimulating hormone (TSH) by suppression of hormone replacement therapy (HRT) for a month Fluid Spanish speaker 18 years or over Obtaining informed consent  Exclusion Criteria:  Diagnosis or treatment for psychiatric disorders Any type of illness with serious impact in medical condition Inability to communicate or to process the information