1.   A previous colonoscopy that Bush underwent two years ago revealed benign polyps, which were removed.

2.   Bush said he had no signs or symptoms of illness but that the last time he had a colonoscopy five or six years ago some benign polyps were discovered.

3.   Bush said his doctors recommended the procedure, a colonoscopy, because benign polyps had been found in previous exams.

4.   Doctors say it is largely preventable, because most colorectal cancers develop slowly over many years from benign polyps.

5.   Iowa State University basketball coach Tim Floyd underwent surgery Monday to remove a benign polyp from his colon, the school said.

6.   Most malignancies in the colon begin as benign polyps.