Colonoscopy examines the entire colon from beginning to end,and a sigmoidoscopy examines the lower end of the colon with a flexible endoscope.

Name: Colonoscopy examines the entire colon from beginning to end,and a sigmoidoscopy examines the lower end of the colon with a flexible endoscope.
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A colonoscopy,which includes a somewhat uncomfortable bowel preparation,examines the entire colon from beginning to end,whereas the sigmoidoscopy examines the lower end of the colon with a flexible endoscope.

Colonoscopy Examines the Entire Colon from Beginning to End,and a Sigmoidoscopy