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Fig. 4B —49-year-old woman with large rectal tubular adenoma that was
missed by radiologist (i.e., perceptive error). Tubular adenoma
(arrow, A and C) that was not judged to be real polyp
by single radiologist is shown on axial (A), 3D endoluminal (B),
and virtual dissection (C) views. Note how polyp is not well seen on
axial view (A). Polyp is elongated in virtual dissection (C)
view. Line drawn in A shows position and direction of endoluminal
camera.
