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Synchronous multiple colorectal adenocarcinomas
Author(s) -
Takeuchi Hideya,
Toda Tomohiro,
Nagasaki Susumu,
Kawano Toyokazu,
Minamisono Yoshikazu,
Maehara Yoshihiko,
Sugimachi Keizo
Publication year - 1997
Publication title -
journal of surgical oncology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.201
H-Index - 111
eISSN - 1096-9098
pISSN - 0022-4790
DOI - 10.1002/(sici)1096-9098(199704)64:4<304::aid-jso10>3.0.co;2-2
Subject(s) - medicine , colonoscopy , barium enema , double contrast barium enema , incidence (geometry) , rectum , colorectal cancer , radiology , carcinoma , lesion , endoscopy , adenocarcinoma , gastroenterology , surgery , cancer , physics , optics
Background The object of the present work was to characterize clinical features and the quality of preoperative examinations in patients with synchronous colorectal carcinomas, and to compare the incidence of associated benign polyps with our findings in patients with a single malignant lesion. Method A retrospective evaluation of 225 patients with primary colorectal carcinoma revealed 9 cases (4.0%) of synchronous colorectal carcinomas. Results The synchronous colorectal carcinomas were located in the same anatomical segment in 7 patients and were divided into different segments in 2 patients. The accuracy of preoperative diagnosis was 55.6% by endoscopy alone and 66.7% by double contrast barium enema (DCBE) alone, while the rate was 77.8% when colonoscopy and DCBE were combined. There was a higher incidence of associated benign polyps in the group with synchronous colorectal carcinomas (55.6%) versus 28.7% for a single carcinoma ( P < 0.05). The main reason why multiple lesions could not be identified preoperatively was that the distal lesions prevented examination of the proximal lesions. Conclusions At the time of surgical resection, it is important to ascertain preoperatively whether or not a second lesion exists. If synchronous polyps are present in patients with synchronous colorectal carcinomas, they should be ablated to reduce the risk of metachronous colorectal carcinoma. J. Surg. Oncol. 64:304–307, 1997 © 1997 Wiley‐Liss, Inc.