| American Thyroid Association, 2009 (13) |
pCND (ipsilateral or bilateral) may be performed, especially for advanced primary tumours (T3 or T4) |
| National Comprehensive Cancer Network, 2013 (58) |
Consider if age <15 or >45 years, radiation history, T3/T4 tumours, aggressive variant (tall cell variant, columnar cell or poorly differentiated features), bilateral nodularity, extrathyroidal extension or distant metastases |
| British Thyroid Association, 2007 (59) |
In patients who are deemed high risk (i.e., they have any of the following features: male sex, age >45 years, tumours greater than 4 cm in diameter, extracapsular or extrathyroidal disease) |
| European Thyroid Association, 2006 (60) and European Society for Medical Oncology Guidelines, 2009 (61) |
Not recommended |
| Japanese Society of Thyroid Surgeons and Japanese Association of Endocrine Surgeons, 2011 (62) |
Routinely recommended |
