Predictive value of morphologic characteristics in rectosigmoid XXXX in the proximal colon.

@entity1 @entity1127 @entity5 @entity6523 @entity14 @entity652 @entity1141
BACKGROUND/AIMS: Sigmoidoscopy is performed more frequently than colonoscopy, especially for screening purposes and searching for @entity14 . The necessity of colonoscopy in @entity1 with an @entity652 of<or=5 mm found on sigmoidoscopy is controversial. The aim of this study was to investigate whether the size of rectosigmoid @entity652 is associated with the risk of @entity5 in the proximal colon and to determine whether there is indication for total colonoscopy. METHODS: @entity1 found to have rectosigmoid @entity6523 on colonoscopy were included in the study. These @entity652 were grouped as diminutive (<or=5 mm), small (6-10 mm) or large (>or=11 mm) @entity1127 . These groups were compared regarding the presence of proximal @entity652 and advanced proximal @entity5 (>10 mm @entity652 and/or villous histology and/or high grade @entity1141 or @entity5 ). @entity1127 found in the rectum and sigmoid colon were considered as distal @entity1127 and @entity1127 other than these were considered as proximal @entity1127 . RESULTS: In this study, of 1124 consecutive @entity1 who underwent colonoscopy between April 1997 and January 2002, 184 (16%) had 258 @entity6523 in the rectosigmoid area. The @entity1127 were diminutive (<or=5 mm) in 105, small (6-10 mm) in 46 and large (>or=11 mm) in 33 @entity1 . Forty-one of the @entity1 (39%) with diminutive @entity1127 , 20 of the @entity1 (43%) with small @entity1127 and 19 of the @entity1 (57%) with large @entity1127 had @entity5 in the proximal bowel. In these @entity1 , advanced proximal @entity5 was found in 8 (8%), in 6 (13%) and in 11 (33%), respectively. There was no difference regarding the presence of @entity5 in the proximal colon between these groups. The rate of advanced proximal @entity5 was found to be significantly higher in the group with large @entity1127 in the rectosigmoid area than in the groups with small and diminutive @entity1127 (p<0.05). In 104 @entity1 (57%) with @entity1127 (s) in rectum and sigmoid colon, no associated @entity1127 or @entity5 was encountered in the proximal colon. CONCLUSION: Colonoscopy is indicated when @entity6523 , regardless of size, is found on rectosigmoidoscopy performed because of symptoms.
