A comparison between barium enema and a modified double-contrast technique as a routine examination of the colon with regard to the diagnosis of colonic polyps.

A modified double-contrast technique has been used as a routine examination instead of the barium enema and the double-contrast technique a.m. Welin. The number of polyps reflects the quality of the technique and the method showed a polyp rate of 4,6%. This is a considerable increase of diagnosed polyps compared to the barium enema, but an improvement in the diagnosis of polyps can be achieved by improving the cleansing procedure prior to the examination.