Diagnostic value of magnetic resonance cholangiopancreatography for secondary common bile duct stones compared with laparoscopic trans-cystic common bile duct exploration

The Diagnostic Value of GGT-Based Biochemical Indicators for Choledocholithiasis with Negative Imaging Results of Magnetic Resonance Cholangiopancreatography

To reveal the relationship between a group of preoperative biochemical indicators such as GGT, ALP, ALT, AST, TB, and DB and the occurrence of common bile duct stones in patients with negative results of magnetic resonance cholangiopancreatography, a retrospective diagnostic accuracy clinical test is conducted in this study. In order to reduce the missed diagnosis rate of choledocholithiasis and perform more accurate common bile duct exploration, 466 patients who underwent surgical treatment of cholelithiasis from January 2014 to December 2015 have been analyzed retrospectively. Firstly, the confounding factors are corrected through Binary Logistic regression. Then, the diagnostic efficacy of each indicator is measured by the ROC curve among different types of patients. In all patients, the top three individual indicators with the greatest AUC curve area for predicting common bile duct stones can be observed from the results of MRCP, γ-glutamyl transpeptidase, and alkaline phosphatase. Besides, the diagnostic efficiency of the comprehensive evaluation is higher than that of all individual indicators. For MRCP-negative patients, the top three largest AUC curve area of the diagnostic efficacy for choledocholithiasis were GGT, ALP, and DB. For patients who have a suspected diagnosis of secondary choledocholithiasis, the diagnostic efficacy of the combination of imaging results, biochemical indexes, common bile duct width, and other abnormal indicators for choledocholithiasis is much higher than that of the single abnormal biochemical indexes for the prediction of choledocholithiasis. For MRCP-negative patients, GGT, ALP, DB, and the width of common bile duct diameter are valuable for the prediction of common bile duct stones, and GGT is the most valuable diagnostic predictor.

Clinical Efficacy Analysis of the Combination of the Laparoscope and Preoperative or Intraoperative Duodenoscope in the Treatment of Cholecystolithiasis with Choledocholithiasis: A Retrospective Study

Aim: This study aims to analyze the efficacy and safety of the combination of laparoscope and preoperative (PODL) or intraoperative (IODL) duodenoscope in the treatment of cholecystolithiasis with choledocholithiasis.

Materials and Methods: From January 2015 to February 2017, 51 patients with cholecystolithiasis and choledocholithiasis, who were treated with the PODL (n = 29) or IODL (n = 22), were reviewed retrospectively. The efficacy and safety were evaluated and compared between these two groups.

Results: The success rates were 100% in IODL group and 96.6% in PODL group. There was no statistical significance in the difference of stone clearance rate and residual stone rate between two groups (P > .05). There were no significant differences in complications, like aspiration, gastrointestinal perforation, and acute cholangitis between two groups (P > .05). IODL significantly decreased numeric rating scale (NRS) scoring, reduced surgery cost and shortened hospitalization time compared to that of PODL group (P < .05). No cholangitis, reoccurrence of stones or biliary obstruction occurred in all 51 patients.

Conclusion: In this retrospective study, IODL was found superior to PODL. And the IODL can significantly decrease NRS scoring, reduce surgery cost and shorten hospitalization time.

Routine Cysticotomy and Flushing of the Cystic Duct in Patients with Low Risk of Common Duct Stones: Can It Be Beneficial?

Background

Gallstone disease affects 15–20% of the general population and up to 20% of these patients present common bile duct stones.

Aim

This observational study reports our experience on routine cysticotomy and flushing of the cystic duct in patients with low risk of common duct stones.

Materials and Methods

We analyzed 731 patients who underwent laparoscopic cholecystectomy between September 2013 and September 2015.

Results

Patients were preoperatively stratified on the clinical risk; those presenting with low preoperative risk of common bile duct stones were referred to undergo laparoscopic cholecystectomy and routine cysticotomy with bile duct flushing. Patients presenting thick bile sludge, solid debrides, and/or increased tension of bile outflow underwent unplanned cholangiography. No intraoperative complications or conversion to open technique occurred. Average follow-up time was 22,8 months (range 12 to 37). Rate of retained ductal stones accounted for 0,3%.

Conclusions

Routine cysticotomy and bile flushing in our experience is a valid, simple, and not time consuming manoeuvre that can help decompressing and flushing CBD. Moreover, it is a valid tool for extending selective IOC approach in a focused manner. Further evaluations have to be conducted to evaluate risks and effectiveness of this manoeuvre.

Magnetic Resonance (MR) Cholangiopancreatography Demonstration of the Cystic Duct Entering the Right Hepatic Duct

Patient: Female, 51

Final Diagnosis: Cystic duct draining into the right hepatic biliary duct

Symptoms: Recurrent abdominal pain

Medication: —

Clinical Procedure: MR-cholangiopancreatography

Specialty: Radiology

Safe laparoscopic clearance of the common bile duct in emergently admitted patients with choledocholithiasis and cholangitis

Backgrounds/Aims

Laparoscopic treatment of patients with choledocholithiasis and cholangitis is challenging due to mandatory recovery of the biliary drainage and clearance of the common bile duct (CBD). The aim of our study was to assess postoperative course of cholangitis and biliary sepsis after laparoscopic clearance of the CBD in emergently admitted patients with choledocholithiasis and cholangitis.

Methods

Emergently admitted patients who underwent laparoscopic clearance of the CBD were included prospectively and stratified in 2 groups i.e., cholangitis positive (CH+) or negative (CH-) group. Patient demographics, comorbidities, preoperative imaging data, inflammatory response, surgical intervention, complication rate and outcomes were compared between groups.

Results

Ninety-nine of a total 320 patients underwent laparoscopic clearance of the CBD, of which, 60 belonged to the acute cholangitis group (CH+) and 39 to the cholangitis negative group (CH-). Interventions were done on average 4 days after admission, operation duration was 95-105 min, and the conversion rate was 3-7% without differences in the groups. Preoperative inflammatory response was markedly higher in the CH+ group. Inflammation signs on intraoperative choledochoscopy were more evident in patients with cholangitis. Postoperative inflammatory response did not differ between the groups. The overall complication rate was 8.3% and 5.1%, respectively. Laparoscopic clearance of the CBD resulted in 1 lethal case (CH+ group), resulting in 1% mortality rate and a similar 12-month readmission rate.

Conclusions

Single-stage laparoscopic intraoperative US and choledochoscopy-assisted clearance of the CBD is feasible in emergently admitted patients with choledocholithiasis and cholangitis.

Accuracy of magnetic resonance cholangiography compared to operative endoscopy in detecting biliary stones, a single center experience and review of literature

AIM: To compare diagnostic sensitivity, specificity and accuracy of magnetic resonance cholangiopancreatography (MRCP) without contrast medium and endoscopic ultrasound (EUS)/endoscopic retrograde cholangiopancreatography (ERCP) for biliary calculi.

METHODS: From January 2012 to December 2013, two-hundred-sixty-three patients underwent MRCP at our institution, all MRCP procedure were performed with the same machinery. In two-hundred MRCP was done for pure hepatobiliary symptoms and these patients are the subjects of this study. Among these two-hundred patients, one-hundred-eleven (55.5%) underwent ERCP after MRCP. The retrospective study design consisted in the systematic revision of all images from MRCP and EUS/ERCP performed by two radiologist with a long experience in biliary imaging, an experienced endoscopist and a senior consultant in Hepatobiliopancreatic surgery. A false positive was defined an MRCP showing calculi with no findings at EUS/ERCP; a true positive was defined as a concordance between MRCP and EUS/ERCP findings; a false negative was defined as the absence of images suggesting calculi at MRCP with calculi localization/extraction at EUS/ERCP and a true negative was defined as a patient with no calculi at MRCP ad at least 6 mo of asymptomatic follow-up. Biliary tree dilatation was defined as a common bile duct diameter larger than 6 mm in a patient who had an in situ gallbladder. A third blinded radiologist who examined the MRCP and ERCP data reviewed misdiagnosed cases. Once obtained overall data on sensitivity, specificity, accuracy, positive predictive value (PPV) and negative predictive value (NPV) we divided patients in two groups composed of those having concordant MRCP and EUS/ERCP (Group A, 72 patients) and those having discordant MRCP and EUS/ERCP (Group B, 20 patients). Dataset comparisons had been made by the Student’s t-test and χ² when appropriate.

RESULTS: Two-hundred patients (91 men, 109 women, mean age 67.6 years, and range 25-98 years) underwent MRCP. All patients attended regular follow-up for at least 6 mo. Morbidity and mortality related to MRCP were null. MRCP was the only exam performed in 89 patients because it did show only calculi into the gallbladder with no signs of the presence of calculi into the bile duct and symptoms resolved within a few days or after colecistectomy. The patients remained asymptomatic for at least 6 mo, and we assumed they were true negatives. One hundred eleven (53 men, 58 women, mean age 69 years, range 25-98 years) underwent ERCP following MRCP. We did not find any difference between the two groups in terms of race, age, and sex. The overall median interval between MRCP and ERCP was 9 d. In detecting biliary stones MRCP Sensitivity was 77.4%, Specificity 100% and Accuracy 80.5% with a PPV of 100% and NPV of 85%; EUS showed 95% sensitivity, 100% specificity, 95.5% accuracy with 100% PPV and 57.1% NPV. The association of EUS with ERCP performed at 100% in all the evaluated parameters. When comparing the two groups, we did not find any statistically significant difference regarding age, sex, and race. Similarly, we did not find any differences regarding the number of extracted stones: 116 stones in Group A (median 2, range 1 to 9) and 27 in Group B (median 2, range 1 to 4). When we compared the size of the extracted stones we found that the patients in Group B had significantly smaller stones: 14.16 ± 8.11 mm in Group A and 5.15 ± 2.09 mm in Group B; 95% confidence interval = 5.89-12.13, standard error = 1.577; P < 0.05. We also found that in Group B there was a significantly higher incidence of stones smaller than 5 mm: 36 in Group A and 18 in Group B, P < 0.05.

CONCLUSION: Major finding of the present study is that choledocholithiasis is still under-diagnosed in MRCP. Smaller stones (< 5 mm diameter) are hardly visualized on MRCP.

Application of hepatic resection in hepatolithiasis

AIM: To investigate the value of hepatic resection in the treatment of hepatolithiasis.

METHODS: The clinical data for 130 patients with hepatolithiasis who underwent hepatectomy from June 2005 to May 2014 were retrospectively analyzed.

RESULTS: Left lateral hepatic lobectomy was performed in 87 patients, left hepatectomy in 19 patients, quadrate lobe resection in 9 patients, regular hepatic resection in 8 patients, partial right lobe resection with left lateral lobectomy in 3 patients, right hepatectomy with left lateral lobectomy in 1 patient, and left medial hepatic resection in 3 patients. The stone clearance rate was 87%. Fifteen patients were discovered to have cholangiocarcinoma, and 13 cases had residual stones. Postoperative complications included incision infection, bile leakage, pneumonia, and pleural effusion. One patient died of liver failure preoperatively.

CONCLUSION: Hepatectomy is a safe and effective treatment for hepatolithiasis. Adequate preoperative evaluation and reasonable surgical procedure can help reduce or avoid biliary tract reoperation.