Surgical Management for Choledochoenteric Fistula

Preoperative Assessment and Timing

The American College of Surgeons recommends immediate referral to a hepatopancreatobiliary (HPB) center, as early referral significantly reduces postoperative complications (OR: 0.24) and biliary strictures (OR: 0.28) compared to delayed referral or repair attempts by non-specialists 2
Obtain liver function tests and inflammatory markers, and perform triphasic CT scan as first-line imaging to detect fluid collections and ductal dilation 2
Use contrast-enhanced MRCP for precise visualization, localization, and classification of the biliary injury 2
Initiate immediate broad-spectrum antibiotics if biliary fistula, biloma, or bile peritonitis is present 2

Remove all scar tissue and devitalized tissue from the proximal bile duct stump before anastomosis, requiring meticulous dissection to expose healthy bile duct mucosa with adequate caliber and normal mucosal characteristics 1
Preserve blood supply to the bile duct during dissection, as vascularized ducts are essential for successful reconstruction 1
Create a Roux-en-Y jejunal limb of 40-60 cm length to prevent reflux of enteric contents into the biliary tree 1
Create a tension-free anastomosis to prevent ischemia and subsequent stricture formation 1, 3, 4
Perform fine coincidence technique with non-invasive suture needle for intermittent or continuous mucosal-mucosal anastomosis 3, 4
Use 5-0 or 6-0 fine suture needle according to the thickness of the bile duct wall when performing choledochojejunostomy 3, 4
Follow principles of single-layer stitching, uniform margins, appropriate density, moderate knotting strength, and anastomosis without tension 3, 4

Conventional placement of bile duct drainage is not necessary 3, 4
Only place short-term drainage for cases with unsatisfied anastomosis, obvious inflammation in the bile duct wall, or intrahepatic bile duct stones 3, 4
Drainage time should generally not exceed 3 months 3, 4

Never perform anastomosis on ischemic, inflamed, or scarred bile duct tissue, as this guarantees failure 1
Avoid end-to-end bile duct anastomosis when tissue loss is present, as this is associated with increased failure rates compared to hepaticojejunostomy 1
Never attempt repair without HPB expertise—this is the single strongest predictor of failure 2

Overall success rates are 83.3% in the early period, but 32.3% develop late complications (strictures, cholangitis) requiring additional interventions 2
Anastomotic stricture rates range 10-20%, with median time to formation of 11-30 months 2
Biliary cirrhosis occurs in 2.4-10.9% of cases 2
BDI-related mortality ranges 1.8-4.6% 2
Associated vascular injury, level of injury, sepsis/peritonitis, and postoperative bile leakage predict worse outcomes 2