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FIG 3. 71-year-old woman with well-differentiated squamous cell carcinoma of maxilla.
A, Axial T2-weighted MR image of metastatic buccinator node (arrow) shows a large, hyperintense necrotic area.
B, Axial diffusion-weighted echo-planar MR image, at b factor of 500 s/mm2, of metastatic node (arrow) shows hyperintensity of the node.
C, Axial diffusion-weighted echo-planar MR image, at b factor of 1000 s/mm2, of metastatic node (arrow) shows nodal signal intensity with a central hypointense area. A large reduction in signal intensity on the image at b 1000 s/mm2 compared with the image at b 500 s/mm2 results in an elevated ADC (0.410 x 10-3 mm2/s).
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