Real-world applicability of differentiated thyroid cancer guidelines

Area of Science:

• Endocrinology
• Oncology
• Nuclear Medicine

Background:

• Thyroid cancer (TC) incidence is rising globally.
• Radioiodine ablation is a standard TC management strategy.
• Multiple international guidelines exist for TC ablation decisions.

Purpose of the Study:

• To compare the concordance of six major thyroid cancer ablation guidelines with a patient cohort.
• To assess the quality of these guidelines using the AGREE II instrument.

Main Methods:

• Retrospective analysis of 336 thyroid cancer patients.
• Implementation of six guidelines: ATA (2009, 2016), ETA, NICE, German, EANM/SNMMI.
• Quality assessment using the Appraisal of Guidelines, Research and Evaluation II (AGREE II) tool.

Main Results:

• Significant variability observed among the six guidelines.
• ATA 2016 improved upon ATA 2009 but created a "probable ablation" category.
• ETA and NICE guidelines identified fewer patients as candidates for ablation.
• German and EANM/SNMMI guidelines showed highest AGREE II scores and aligned best with clinical decisions.

Conclusions:

• Existing thyroid cancer ablation guidelines require updates to support individualized patient management.
• Physician experience remains crucial in final treatment decisions.
• Dynamic risk stratification is essential for optimal ablation strategies.