Research Article

Homogeneity Parameter in Contrast-Enhanced Ultrasound Imaging Improves the Classification of Abnormal Cervical Lymph Node after Thyroidectomy in Patients with Papillary Thyroid Carcinoma

Figure 4

Fifty-five-year-old woman had undergone right thyroidectomy three years ago. ACLNs were detected on the left neck one year ago. (a) ACLN located in level I: loss of fatty hilum and hyperechogenicity in conventional US (23 × 13 mm). A peripheral (Type IV) vascular pattern with evidence of abundant atypical peripheral flow is shown in CDFI. (b) Heterogeneous hyperenhancement on CEUS (13 s after SonoVue injection). (c) A hypoechoic, solid, and calcified thyroid nodule in the right lobe (TI-RADS category 4b) three years ago before the first thyroidectomy. (d) It showed hyperenhancement in CEUS (18 s after SonoVue injection) on stored video.
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