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(a) At B-mode US in Patient with papillary thyroid carcinoma, a laterocervical node showed irregular shape, hypoechoic aspect and regular margins with no internal microcalcifications or cystic changes (low metastatic risk); (b) At CEUS, the laterocervical node presented rich heterogeneous and centripetal vascularization (high metastatic risk). The histological examination confirmed that it was a metastatic node of a papillary thyroid cancer.
