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Magnetic compression anastomosis for the treatment of benign biliary strictures: a clinical study from China

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Abstract

Background

Magnetic compression anastomosis (MCA) is a revolutionary minimally invasive method to perform choledochocholedochostomy in patients with benign biliary stricture (BBS). We conducted MCA for the treatment of severe BBS that could not be treated by conventional methods.

Patients and methods

Patients with BBSs that could not be treated using conventional treatments were included. All patients underwent percutaneous transhepatic biliary drainage (PTBD) before MCA, and underwent cholangiography via simultaneous PTBD and endoscopic retrograde cholangiopancreatography (ERCP). The MCA device consisted of a parent and a daughter magnet. The daughter magnet was delivered via the PTBD route to the proximal end of the obstruction, and the parent magnet was delivered via ERCP to the distal end of the obstruction. After recanalization, the MCA device was removed, and biliary stenting (or PTBD) was performed for at least 6 months.

Results

Of the 9 patients (age 49 ± 12.9 years), 6 had undergone orthotopic liver transplantation. MCA was successful in all 9 patients. The stricture length was 3 ± 1.7 mm, and recanalization occurred after 16.3 ± 13.2 days. Multiple plastic stents (4 patients), fully covered self-expandable metallic stents (4 patients), or PTBD (1 patient) was used after recanalization. Two mild adverse events occurred (cholangitis, 1 patient; biliary bleeding, 1 patient), but were resolved with conservative treatment. Stents were retrieved after > 6 months, and no stenosis occurred during 2–66 months of stent-free follow-up.

Conclusion

The MCA technique is a revolutionary method for choledochocholedochostomy in patients with severe BBS unresponsive to conventional procedures.

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Acknowledgements

The authors thank all the medical students and surgeons for their participation in all trials and the staff at The First Affiliated Hospital of Xi’an Jiaotong University for their help and provision of facilities to carry out this study.

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Author notes

  1. Yu Li and Hao Sun contributed equally to this work.

Authors and Affiliations

  1. Department of Hepatobiliary Surgery and Institute of Advanced Surgical Technology and Engineering, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, 710061, Shaanxi, China

    Yu Li, Hao Sun, Xiaopeng Yan, Shanpei Wang, Dinghui Dong, Xuemin Liu, Bo Wang & Yi Lv

  2. Shaanxi Provincial Regenerative Medicine and Surgical Engineering Research Center, 277 West Yanta Road, Xi’an, 710061, Shaanxi, China

    Yu Li, Hao Sun, Xiaopeng Yan, Shanpei Wang, Dinghui Dong, Xuemin Liu, Bo Wang & Yi Lv

  3. Department of Hepatobiliary Surgery, Chinese PLA General Hospital, Beijing, 100853, China

    Maosheng Su

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  1. Yu Li
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Correspondence to Yi Lv.

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Drs.Yu Li, Hao Sun, Xiaopeng Yan, Shanpei Wang, Dinghui Dong, Xuemin Liu, Bo Wang, Maosheng Su and Yi Lv have no conflicts of interest or financial ties to disclose.

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Li, Y., Sun, H., Yan, X. et al. Magnetic compression anastomosis for the treatment of benign biliary strictures: a clinical study from China. Surg Endosc 34, 2541–2550 (2020). https://doi.org/10.1007/s00464-019-07063-8

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