[Results of double-contrast examination of the colon].
Experiences and results of double-contrast enemas are reported. The accuracy of double-contrast enemas is proved by 500 consecutive investigations. Correlation of endoscopic and roentgenologic investigations showed, that the double-contrast enema is a reliable method concerning the detection of polyps, carcinomas and inflammatory colon diseases. Advantages and disadvantages of roentgenology and endoscopy of the colon are discussed.