Bile duct injury after laparoscopic cholecystectomy:resection of the entire extrahepatic biliary tree
Bibliographic record
Abstract
A 28-year-old woman with biliary colic underwent an elective laparoscopic cholecystectomy. The operation proceeded smoothly and no intraoperative complications were recognized. The patient returned 7 days later with abdominal discomfort and rising bilirubin and alkaline phosphatase levels. Ultrasound revealed a subhepatic fluid collection. At endoscopic retrograde cholangiopancreatography (ERCP) a complete disruption of the common bile duct was seen communicating with the subhepatic collection. Despite the lack of visualization of the proximal biliary tree, an endoscopic stent was placed. The patient was referred to a hepatobiliary and pancreas referral center where CT revealed no undrained foci of sepsis. The endoscopic stent was coiled up within the small, residual, subhepatic fluid collection. Magnetic resonance cholangiography (MRC) was obtained (A) to visualize the proximal biliary tree. The hepatic duct confluence is not visualized, and mild biliary dilatation of five separate ducts is evident converging on what appears to have been the area of the biliary confluence. This injury is classified as a Bismuth Type 4, or, alternatively, a Strasberg Type E4. After referral and workup, the patient was taken 2 weeks later for operative repair and found to have a complete resection of the biliary tree from the proximal confluence down to its junction with the cephalad portion of the pancreas. The endoscopic stent exited the cut end of the bile duct and was coiled up in the subhepatic space along the porta hepatis. Thermal injury, manifested by necrosis and early stricture formation, was seen at the cut ends of the biliary radicals entering the liver. The devitalized tissue was debrided back to healthy bile ducts. The full extent of the injury was precisely defined. The MRC was extremely accurate in predicting the actual biliary anatomy. Five separate biliary radicals were identified “flush” at the liver surface (A): a separate segment 6 duct (A, a), right posterior sectoral duct (A, b), anterior sectoral duct (A, c), a separate segment 4 branch (A, d), left hepatic duct (A, e). MRC was also extremely accurate in delineating normal, nondilated, complicated hilar anatomy in a separate patient without pathology (B, f segment 6 bile duct, g segment 7 bile duct, h anterior sectoral duct of the right lobe draining segments 5 and 8, I left hepatic duct). Because the blood supply to the bile ducts at this level is contained within A B
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".