Accuracy of XXXX localization: Computed tomography scanning as a complement to colonoscopy.

@entity1 @entity694 @entity5
AIM: To determine the utility of computed tomography (CT) scanning in localizing @entity694 . METHODS: At a single tertiary care teaching hospital, a retrospective chart review was conducted on @entity1 who underwent surgery for @entity694 between January 2004 and May 2006. One hundred and four charts containing all of the following data were reviewed: preoperative colonoscopy report, preoperative CT report, surgical operative report, @entity5 pathology report. The colon was divided into five segments from the cecum to the sigmoid and the location of the lesions was categorized into one of these areas. The @entity5 location was considered "erroneous" if its location determined during surgery differed from the location determined by colonoscopy or CT. RESULTS: Over all, @entity5 location was accurately determined via colonoscopy in 83/104 cases (79.8%) and erroneously in 21/104 (20.2%) of cases. CT scan accurately localized @entity694 in 52/104 (50.0%) of cases, incorrectly localized @entity5 in 18/104 (17.3%) of cases, and did not detect known @entity5 in 34/104 (32.7%) of cases. Of the 21 @entity5 erroneously located by colonoscopy, 11 (52.4%) were accurately localized by CT scan. The average @entity5 size for all @entity1 in this study was 5.72 (+/- 3.11) cm. The average size of @entity5 properly located by colonoscopy and CT was 5.39 (+/- 3.34) cm and 6.79 (+/- 3.48) cm, respectively. The average size of the @entity5 not detected by CT was 3.98 (+/- 1.75) cm. CONCLUSION: CT scanning may be used in concert with colonoscopy to help localize @entity694 .
