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FIG 2. Case of a 53-year-old man with squamous cell carcinoma of the hypopharynx.
A, Gray-scale sonogram of a metastatic cervical lymph node shows abnormal, heterogeneous echogenicity of the parenchyma.
B, Power Doppler sonogram of the same node as that shown in panel A shows abnormal parenchymal blood flow, characteristic of metastasis.
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