Volume 15, Issue 1 pp. 35-41
Original Article

Initial large diameter of common bile duct is associated with long-term dilatation of bile duct after endoscopic extraction of stones

Chang Whan Kim

Chang Whan Kim

Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

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Jae Hyuck Chang

Corresponding Author

Jae Hyuck Chang

Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

Correspondence to: Jae Hyuck CHANG, Division of Gastroenterology, Department of Internal Medicine, Bucheon St Mary's Hospital, College of Medicine, Catholic University of Korea, 327, Sosa-ro, Wonmi-Gu, Bucheon 420-717, Republic of Korea. Email: [email protected]Search for more papers by this author
Yeon Soo Lim

Yeon Soo Lim

Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

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Tae Ho Kim

Tae Ho Kim

Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

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In Seok Lee

In Seok Lee

Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

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Sok Won Han

Sok Won Han

Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

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First published: 02 September 2013
Citations: 1

Abstract

Objective

To investigate the time and extent of recovery of dilated common bile duct (CBD) after the extraction of CBD stones and to identify the factors related to the long-term dilatation of the CBD after stone removal.

Methods

Data of 329 consecutive patients undergoing endoscopic extraction of CBD stones from January 2008 to December 2012 were retrospectively reviewed. Finally, 44 patients were enrolled in the study.

Results

The CBD diameter significantly decreased after stone extraction (P < 0.001). However, the CBD diameter in patients who were followed up for 1 week and longer and <1 week did not differ significantly. The diameter decreased more in patients with an initial CBD diameter ≥ 15 mm than in those with an initial CBD diameter <15 mm before stone extraction (P = 0.007), but the normalization of dilated CBD was less frequent in patients with a large initial CBD diameter. The factors related to the long-term dilatation of CBD (>10 mm for >6 months) were initial CBD diameter, the largest diameter of CBD stone and endoscopic papillary large balloon dilatation. Initial CBD diameter was an independent factor with multivariate analysis (OR 1.754, P = 0.017).

Conclusions

The CBD diameter recovers rapidly after the extraction of CBD stones. An initial large CBD diameter before stone extraction is associated with the long-term dilatation of CBD.

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