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• W2012912692 abstract "We thank Drs Oria and Kohan for their interesting comments on our article: “Is complicated gallstone disease preceded by biliary colic?”1We found that 57% of 175 patients with complicated gallstone disease (including pancreatitis) had experienced biliary colics before the complication. In these cases, the complication could probably have been prevented by early cholecystectomy. However, significant patient’s and general practitioner’s delays had occurred after the “warning” colic (especially if the pain was located in the epigastric region), thus precluding this option in practice. We agree with Drs Oria and Kohan that it is not possible to differentiate between biliary colic due to cystic duct obstruction by gallbladder stones and biliary colic caused by stones migrated to the bile duct. In fact, the term “biliary colic” does not pretend to make such differentiation. Although considered “a confounding term” by the authors, “biliary colic” is used frequently to describe biliary pain due to “uncomplicated gallstone disease,” not only by this journal2 but also by other key journals3, 4 and the Cochrane database.5Nevertheless, the “a priori” chance that gallbladder stones are the cause of biliary colic is much higher than bile duct stones, provided that significant abnormalities in liver biochemistry and clear bile duct dilatation by ultrasound are absent. Indeed, most episodes of biliary colic resolve spontaneously, without subsequent complications. Using various techniques including routine intraoperative cholangiography during cholecystectomy, frequency of unexpected bile duct stones in patients who have experienced biliary colics varies between 5% and 12%.6,7 These data indicate that bile duct stones are relatively rare in patients with biliary colics and/or that most bile duct stones migrate spontaneously to the duodenum. Oria and Kohan report interesting data on migration of bile duct stones in 39 patients with prior biliary pain, using the time-honored technique of stool screening.8–10 In fact, their patients all had dilated bile ducts by ultrasound and may thus not be entirely representative of the entire population of patients with biliary colics. In addition, there is no solid evidence that early detection or bile duct stones by endoscopic ultrasound or magnetic resonance cholangiopancreatography would lead to a more beneficial outcome in the entire group of patients who have experienced biliary colics. If one assumes an a priori chance of 5% for bile duct stones under these circumstances and endoscopic ultrasound to have a sensitivity and specificity of 95%, positive predictive value of finding bile duct stones by endoscopic ultrasound would be only 50%. Subsequent endoscopic retrograde cholangiopancreatography would thus expose 50% of the patients to unnecessary risks of this procedure. In addition, the natural history of bile duct stones under these circumstances is uncertain.6, 7The authors further state that “in order to prevent acute gallstone pancreatitis, early identification of patients undergoing anicteric episodes of gallstone migration is essential.” However, the evidence for this statement is lacking. No study has shown a reduction in incidence of biliary pancreatitis by differentiating between cystic and main duct obstruction. In our opinion, additional investigations and treatment of bile duct stones in patients with biliary colics should be performed depending on the chance that bile duct stones are indeed present (for useful risk factors see Abboud et al.11) In contrast, as we conclude in our paper, a policy of timely referral and cholecystectomy of patients with biliary colic could prevent complicated gallstone disease, including biliary pancreatitis in up to 50% of cases." @default.
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• W2012912692 title "Biliary Colic is a Valuable Clinical Descriptor for Biliary Pain Due to “Uncomplicated” Gallstone Disease" @default.
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• W2012912692 doi "https://doi.org/10.1007/s11605-009-0950-3" @default.
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