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639382.fig.003b
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Figure 3: (a) B-mode in ultrasonography around the right superior internal jugular vein of a 69-year-old man with carcinoma on the right side of the tongue. The metastatic lymph node (arrows) contacts the common carotid artery (white arrowheads). (b) Computer tomography (CT) images of the same patient shown in Figure 3(a). The arrow indicates the same regions of B-mode in ultrasonography. (c) Magnification of CT images in area around arrow of Figure 3(b). The metastatic lymph node (arrows) contacts the common carotid artery (white arrowheads).