Fig. 2
Images of a 56-year-old male with a large right-sided LN metastasis of a small SCC in the right piriform recess. T2W-STIR (a) and CET1WFS (b) show small soft tissue swelling in the entrance of the right piriform recess; ipsilateral kolliquated LNs can be observed. Findings also revealed substantial diffusion restriction with signal increase in axial trace DW images (c and d, b-value: 1,000 s/mm2) and a corresponding signal decrease in the ADC map (e) and a signal increase in the e-ADC image (f). Note the ADC values, which measured 0.790 × 10−3 mm2/s in the PT and 0.740 × 10−3 mm2/s in the LN. On the axial PET-CT fusion image (g) and on the FDG-PET scan (h), increased uptake corresponding to the occult PT (arrow) and metastatic nodes can be seen. SCC of hypopharynx, stage T1N3M0