The Significance of Synchronous Colorectal Polyps in Colon Cancer Proximal to the Splenic Flexure.
- Author:
Jin Suk KIM
1
;
Won Ho KIM
;
Jung Sun KIM
;
Yong Suk CHO
;
Nam Kyu KIM
;
Hoguen KIM
;
In Suh PARK
Author Information
1. Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Proximal colon cancer;
Flexible sigmoidoscopy;
Colonoscopy;
Screening test
- MeSH:
Cecum;
Colon*;
Colon, Transverse*;
Colonic Neoplasms*;
Colonoscopy;
Colorectal Neoplasms;
Humans;
Mass Screening;
Polyps*;
Sigmoidoscopy
- From:Korean Journal of Gastrointestinal Endoscopy
2000;20(3):177-182
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND/AIMS: The aim of this study was to evaluate the characteristics of colorectal polyps, especially distal colorectal polyps and their frequency in patients with colon cancer located proximal to the splenic flexure. METHODS: Among 1,250 patients with colorectal cancer, 269 patients (21.5%) had colon cancer located proximal to the splenic flexure. Of these, 183 patients were involved in this study because complete colonoscopic evaluations to the cecum or to the level of proximal colon cancer were possible. RESULTS: 54 patients (29.5%) had one or more distal colorectal polyps, 33 patients (18.1%) had one or more adenomatous distal polyps, and 3 patients (1.6%) had synchronous distal carcinoma. The percentage of patients without distal polyps was 70.5% of 183 patients with proximal colon cancer, and 80.3% of patients without distal neoplastic lesions. The percentage of patients with advanced lesions (villous component, high-grade dysplasia, or > or =1 cm in diameter) was 40.7% of 54 patients with distal colorectal polyps. CONCLUSIONS: Flexible sigmoidoscopy is insensitive and ineffective for the detection of proximal colon cancer. Ongoing evaluation of colonoscopy as a general screening test is appropriate.
