Endocrine Abstracts

The Northern Cancer Network Guidelines produced in 1999 for the management of differentiated thyroid cancer (DTC) state that patients should undergo two challenge scans after total thyroidectomy and radioiodine ablation; 6 months and 18 months after ablation. Due to the significant morbidity associated with thyroid hormone withdrawal in preparation for challenge scans, the need for the second scan has been questioned in the presence of a negative first scan and undetectable se...