Stable and asymptomatic multiple lesions 1-2 cm (diameter)
Progressive and/or symptomatic large single lesion 3 cm (diameter) or multiple lesions 1-2 cm (diameter)
Negative
Stable lymph node≤ 1 cm (short axis) and asymtomatic
Local treatment
Progressivelymph node≤ 1 cm (short axis) and/or symptomatic
Anatomic/functional imaging
Lymph node＞1 cm (short axis)
Observation
Local recurrence
Stable or progressive and/or symptomatic single lesion ≤ 3 cm (diameter)
Biochemical evidence of disease
Surgery
Distant metastasis
RR-DTC
Systemic treatment
Observasion
Tg 10 ng/mL or rising Tg values
