Abstract
Background
The purpose of this study was to evaluate the value of preoperative screening colonoscopies in patients with biliary tract cancer.
Methods
A total of 544 patients with biliary tract cancer who underwent preoperative screening colonoscopies between January 2005 and December 2012 were retrospectively analyzed.
Results
Synchronous colorectal neoplasia was detected in 199 patients (36.7 %), with adenocarcinomas detected in 21 (3.9 %) patients, carcinoids in two (0.4 %) patients, and adenomas in 176 (32.4 %) patients. Of those with adenomas, 32 patients were diagnosed with advanced adenomas, defined as adenomas with a maximum diameter of >1 cm, villous histology, or high-grade dysplasia because these characteristics implied the risk of malignant transformation. Fifty-five (10.1 %) of the patients with colorectal neoplasia required resection (11 surgical and 44 endoscopic resections). There were no major adverse events related to the resection. Univariate and multivariate analyses revealed that smoking status [ex-smoker + current smoker vs. non-smoker: odds ratio (OR) 2.32; 95 % confidence interval (CI) 1.30−4.21] and advanced age (≥70 vs. ≤69 years: OR 2.22; 95 % CI 1.24−3.91) were independent risk factors of having a colorectal neoplasia that required resection.
Conclusions
In patients with biliary tract cancer, preoperative screening colonoscopy was feasible and provided valuable clinical information. Synchronous colorectal neoplasia was detected in a substantial number of patients. Preoperative screening colonoscopies should be considered especially in high-risk patients such as smokers and elderly patients.
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Itatsu, K., Yokoyama, Y., Ebata, T. et al. The value of preoperative screening colonoscopies in patients with biliary tract cancer. J Gastroenterol 51, 138–143 (2016). https://doi.org/10.1007/s00535-015-1092-x
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DOI: https://doi.org/10.1007/s00535-015-1092-x