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FIG 3. Sonograms of a reactive node from a 54-year-old man with squamous cell carcinoma of the larynx (A) and a metastatic node from 64-year-old man with squamous cell carcinoma of the hypopharynx (B) show a preferential increase in short axis diameter of the metastatic node.
A, Gray-scale sonogram shows reactive cervical lymph node with relatively flat shape. Arrows indicate hilum.
B, Gray-scale sonogram shows metastatic cervical lymph node. Note that the lymph nodes in panels A and B exhibit similar longitudinal axis lengths, but that the metastatic node in B has a greater short axis length. The metastatic node also shows a focal area of necrosis (arrows).
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