Neck ultrasonography (US) is recommended for the assessment of all patients with thyroid carcinoma after initial therapy, since even low-risk patients with undetectable stimulated thyroglobulin (Tg) may present cervical metastases. In the case of these metastases, US is the most sensitive method and is superior to whole-body 131I scanning. Cervical lymph nodes with a diameter > 5 mm presenting thin calcifications and/or cystic degeneration have almost always a malignant etiology. In the absence of these characteristics, a round shape and […]