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Ultrasound features of malignant lymph nodes. (A) Solid, rounded lymph node with metastatic papillary thyroid carcinoma (PTC). (B) Punctate internal calcifications in a lymph node with metastatic PTC. (C) Complex solid/cystic lymph node with metastatic PTC. (D) Completely cystic lymph node with metastatic PTC. (E) Peripheral hypervascular pattern in a lymph node with metastatic PTC.
