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KMID : 0371320120830020097
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Journal of the Korean Surgical Society
2012 Volume.83 No. 2 p.97 ~ p.101
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Common bile duct dilatation after cholecystectomy: a one-year prospective study
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Park Seon-Mee
Kim Woo-Seok
Bae Il-Hun
Kim Ji-Hoon
Ryu Dong-Hee
Jang Lee-Chan
Choi Jae-Woon
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Abstract
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Purpose: Bile duct dilatation after cholecystectomy continues to be a matter of controversy. We aimed determine the magnitude of common bile duct (CBD) dilatation after cholecystectomy followed up to 1 year.
Methods: Sixty-four cases (age, 47.3 ± 11.7 years; men, 28; women, 36) enrolled in this study. They received laparoscopic cholecystectomy in Chungbuk National University Hospital for symptomatic cholelithiasis or gallbladder polyps with normal bile duct, less than 7 mm. The CBD diameter was measured by one radiologist using ultrasonography at the maximum point after full length evaluation of extrahepatic bile duct. Forty-five and thirty-one cases were followed at 6 months and 1 year, respectively.
Results: The CBD was dilated slightly from 4.1 mm at baseline to 5.1 mm at 6 months and 6.1 mm at 12 months after cholecystectomy. The number of cases of CBD dilatation of more than 7 mm at 6 months and at 12 months after cholecystectomy were 11 (24.4%) and 9 (29.0%), respectively. Seven cases at 6 months and 5 cases at 12 months showed bile duct dilation of more than 3 mm compared to baseline. There were no cases having bile duct dilation of more than 10 mm.
Conclusion: Postcholecystectomy dilatation of the bile duct occured slightly in most cases. But some cases showed more than 3 mm dilatation over baseline. Asymptomatic bile duct dilatation of up to 10 mm can be considered as normal range in patients after cholecystectomy.
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KEYWORD
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Cholecystectomy, Common bile duct, Dilatation, Ultrasound
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