Double contrast barium enema and flexible rectosigmoidoscopy: a reliable diagnostic combination for detection of XXXX .

@entity1 @entity5 @entity189 @entity14 @entity652
The efficiency of double contrast barium enema and flexible rectosigmoidoscopy (to 60 cm) in the assessment of @entity1 with a positive Hemoccult II test in a randomized screening study for @entity14 was evaluated. A positive test was present in 625 @entity1 , of whom 530 had a complete enema and rectosigmoidoscopic assessment. A @entity189 was diagnosed in 26 and an @entity652 greater than or equal to 1 cm in diameter in 71. As a control, 323 @entity1 with a negative assessment repeated the Hemoccult II test and of these 67 had a positive second test, of whom 55 underwent colonoscopy. One @entity189 (Dukes' A) and two @entity652 greater than or equal to 1 cm in diameter were diagnosed. The efficiency of the assessment was also checked by rescreening the whole group 1-2 years after the first study and by continuing follow-up. It was found that two more @entity189 and one @entity652 greater than or equal to 1 cm in diameter had been overlooked at the primary assessment. The sensitivity for @entity5 greater than or equal to 1 cm in diameter at the primary assessment was 72 per cent for double contrast barium enema and 86 per cent for rectosigmoidoscopy. The sensitivity for the combined methods was 94 per cent and the specificity was 99 per cent. The combination of double contrast barium enema and rectosigmoidoscopy in the primary assessment of @entity1 with a positive Hemoccult II test gives an acceptable result and immediate retesting of those with a negative assessment is not necessary.
