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. Author manuscript; available in PMC: 2014 Jan 1.
Published in final edited form as: Radiol Clin North Am. 2013 Jan;51(1):69–88. doi: 10.1016/j.rcl.2012.09.005

FIGURE 19. Extrinsic impression related to an adjacent small bowel loop.

FIGURE 19

FIGURE 19

FIGURE 19

FIGURE 19

Coronal 2D CTC images (A and B) show a focal soft tissue “mass” (arrowhead) involving the transverse colon. Transverse 2D image (C), however, shows the small bowel loop (arrow) extending across the adjacent colon. At 3D (D), the preservation of the overlying colonic fold is a sign that the lesion is caused by extrinsic impression.