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Fig. 6B —52-year-old man with 8-mm flat tubular adenoma in sigmoid colon.
Two-dimensional transverse CTC images obtained with wide window (B:
width, 1,500 H; level, -400 H) and soft-tissue window (C: width, 400 H;
level, 20 H) settings show slightly elevated lesion (arrowheads). On
soft-tissue window image (C), lesion presents as focal thickening of
colonic wall that can be is distinguished from adjacent colonic wall that is
barely perceptible after distention.
