Risk of recurrence | |||
Low | Intermediate | High | |
Nonstimulated Tg* | 4 to 6 weeks 3 to 6 months 9 to 12 months | 4 to 6 weeks 3 to 6 months 9 to 12 months | 4 to 6 weeks 3 to 6 months 9 to 12 months |
Neck ultrasound | At 6 to 12 months | At 6 to 12 months | Every 6 to 12 months |
Diagnostic WBS | Usually not indicated | Case specific | Case specific |
MRI, CT | Not indicated | Not indicated | If Tg elevated or high clinical suspicion |
FDG-PET | Not indicated | Not indicated | If Tg >10 ng/mL |
Serum TSH goal | 0.1 to 0.5 mU/L if nonstimulated Tg detectable 0.5 to 2.0 mU/L if nonstimulated Tg undetectable | 0.1 to 0.5 mU/L | <0.1 mU/L |
Tg: thyroglobulin; WBS: whole-body scan; MRI: magnetic resonance imaging; CT: computed tomography; FDG-PET: fludeoxyglucose-positron emission tomography; TSH: thyroid-stimulating hormone.
* Stimulated Tg may be required to document excellent response to therapy unless the functional sensitivity of the Tg assay is <0.2 ng/mL.Do you want to add Medilib to your home screen?