Double-Contrast Barium Enema

Has a sensitivity as high as 95% in detecting polyps greater than 1 cm. in diameter.

Low risk of perforation approximately one in 25,000 examinations.

Associated mortality rate from perforation one in 250,000.

Sensitivity for detection of cancer ranges from 85-90%.

Low radiation dose of approximately 300-500 mrad (3-5 mGy), which is less than the dose associated with screening mammography.

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