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Transverse greyscale sonogram in a patient with papillary carcinoma of the thyroid shows a metastatic lymph node in the internal jugular chain (arrows). The lymph node is round, well defined and hyperechoic compared with the adjacent muscle. Note the intranodal calcification, which is echogenic and punctuate (white arrowhead). The black arrowheads indicate the common carotid artery.
