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대장암에서의 동시성 대장 병변

Synchronous Lesions in Colorectal Cancer

대한대장항문학회지 2005년 21권 6호 p.413 ~ 418
박영진 ( Park Young-Jin ) - 인제대학교 의과대학 일산백병원 외과학교실


Purpose: The detection and removal of synchronous cancer and polyps in colorectal surgery is important to prevent the future development of metachronous cancer. However, it is occasionally impossible to evaluate the entire colon with colonoscopy preoperatively due to luminal obstruction by tumors. The aim of this study is to evaluate the incidence of synchronous colorectal tumors and to emphasize the importance of their peri-operative detection through vigorous application of colonoscopy.

Methods: Three hundreds two patients underwent a potentially curative resection for colorectal cancer in Ilsan Paik Hospital from January 2000 to March 2005. Colonoscopy was performed preoperatively or intraoperatively. All the synchronous polyps detected by colonoscopy and contained in the surgical specimen were included in the analysis. The data on synchronous cancer and polyps were collected through medical records and colonoscopic databases. The incidence, the risk factors, and the effects of synchronous polyps on surgery were analyzed.

Results: A total of 268 polyps were detected in 112 patients (37%) when all types of polyp were included whereas true adenomatous polyps were present in 78 patients (26%) among 302 patients. Synchronous cancers were found in 14 patients (4.6%). The detection of polyps on preoperative colonoscopy changed the surgical strategy in 30 out of the 223 patients (13.5%) who had completed preoperative colonoscopy. Neither the age and the gender of the patient, the location and the stage of the tumor, nor the family history were related with increased risk of synchronous polyps. Seventeen among 46 intraoperative colonoscopy cases had synchronous lesions which were not known on preoperative evaluation. Another bowel resection was needed to remove the lesions in nine of them.

Conclusions: Synchronous colorectal polyps or cancer is frequent, and preoperative detection is important. Intraoperative colonoscopy can provide valid information if a preoperative colonoscopic evaluation is not available. J Korean Soc Coloproctol 2005;21:413-418


동시성 대장 용종;수술 중 대장내시경
Synchronous colon polyp;Intraoperative colonoscopy
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