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Axial images obtained in a 69-year-old man with moderately differentiated SCC of the right ethmoid sinuses extending intracranially.
A, T2-weighted fat-suppressed MR image shows the mass (arrows).
B, Echo-planar DW image obtained with b = 1000 s/mm2 shows significant susceptibility artifacts due to a fixed partial denture, making it impossible to evaluate diffusion.
C, LSDWI obtained with b = 1000 s/mm2 shows the mass (arrows) free from susceptibility artifacts.
