The Natural History of Colorectal Polyps and Masses: Rediscovered Truths from the Barium Enema Era
Perry J. Pickhardt1,2
1 Department of Radiology, University of Wisconsin Medical School, E3/311
Clinical Science Center, 600 Highland Ave., Madison, WI 53792-3252. Address
correspondence to P. J. Pickhardt.
2 Department of Radiology, Uniformed Services University of the Health Sciences,
Bethesda, MD.

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Fig. 1A A polyp of the descending colon 5 mm in width in 65-year-old man
showed no change in size or marginal configuration during three
double-contrast study observations over 6.5 years. March 19, 1955. (Reprinted
with permission from [1])
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Fig. 1B A polyp of the descending colon 5 mm in width in 65-year-old man
showed no change in size or marginal configuration during three
double-contrast study observations over 6.5 years. June 23, 1960. (Reprinted
with permission from [1])
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Fig. 1C A polyp of the descending colon 5 mm in width in 65-year-old man
showed no change in size or marginal configuration during three
double-contrast study observations over 6.5 years. November 27, 1961.
(Reprinted with permission from
[1])
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Copyright © 2007 by the American Roentgen Ray Society.