Colon exam: Improved techmique for examing the whole colon over previous sigmoidoscopy. It is best performed by use of a long flexible scope in a bowel that has undergone cleansing (bowel prep). Virtuial colonoscopy defined by radiological exam has been used with some value, not requiring insertion of scope into rectum. Early polypoid tumors and cancers can be detected when asymptomatic
Answered 4/12/2017
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