BACKGROUND:Common bile duct (CBD) stones are a common condition with high recurrence rates of stone and cholangitis. However, whether stone type influences recurrence remains unclear. METHODS:We retrospectively analyzed 190 patients who underwent endoscopic retrograde cholangiopancreatography (ERCP) for CBD stones between January 2014 and December 2023. Patients were categorized into two groups: brown pigment stone (n = 127) and black pigment stone (n = 63). Clinical characteristics were compared and recurrence risk factors were analyzed. This study was approved by the Institutional Review Board of Peking University Third Hospital (Approval No. M2024869) and conducted in accordance with the Declaration of Helsinki (2013 revision). RESULTS:Baseline characteristics were similar between groups, except the brown pigment group had higher rates of prior ERCP (33.1% vs. 17.5%), larger CBD diameter (15 mm vs. 12 mm), and more multiple stones (69.3% vs. 49.2%) (all p < 0.05). Recurrence of CBD stones (35.4% vs. 9.5%) and cholangitis (21.3% vs. 4.8%) was significantly higher in the brown pigment group (p < 0.05), with shorter median stone-free survival (67.0 vs. 82.0 months) and cholangitis-free survival (70.0 vs. 82.0 months). Multivariate analysis identified brown pigment stones (HR = 3.162, 95% CI: 1.337-7.482, p = 0.009) and prior ERCP (HR = 3.254, 95% CI: 1.798-5.888, p < 0.001) as independent risk factors for stone recurrence, while stone diameter ≤ 10 mm was protective (HR = 0.412, 95% CI: 0.220-0.773, p = 0.006). Brown pigment stones (HR = 3.434, 95% CI: 1.026-11.489, p = 0.045) and prior ERCP (HR = 2.398, 95% CI: 1.111-5.173, p = 0.026) also independently predicted cholangitis recurrence. CONCLUSION:Brown pigment stones carry higher risks of stone and cholangitis recurrence, and ERCP may not be the preferred treatment.

BACKGROUND:Choledocholithiasis is a common benign disease of the biliary tract. We identified a particular type of choledocholithiasis characterized by sudden narrowing of the common bile duct at the site of impaction, which caused a marked increase in surgical difficulty and risk compared to treatment for typical choledocholithiasis. This phenomenon has not been described in previous studies. AIM:To propose the ice-breaking sign and evaluate its influence on treatment strategies for choledocholithiasis. METHODS:Using a retrospective case-control study design, patients who were diagnosed with common bile duct stones and admitted to the Emergency Department of Peking University Third Hospital between January 2018 and December 2023 were included. Propensity score matching was used to match cases and controls. Univariate analysis was conducted to assess the differences in clinical data between the two groups of patients. RESULTS:There were no significant differences in the baseline data between the two groups, except for higher incidence of jaundice, alkaline phosphatase and total bilirubin in the ice-breaking sign group. Compared to the control group, the ice-breaking sign group had lower success rates for endoscopic retrograde cholangiopancreatography (25.0% vs 81.8%, P = 0.006) and laparoscopic common bile duct exploration (69.4% vs 93.8%, P = 0.007), longer operation time (148.04 ± 60.55 minutes vs 106.15 ± 35.21 minutes, P = 0.001), higher likelihood of T-tube placement (62.2% vs 31.3%, P = 0.016) and using lithotripsy techniques during surgery (29.7% vs 0%, P = 0.001), more intraoperative bleeding [25.0 (20.0-50.0) mL vs 10.0 (10.0-20.0) mL, P < 0.001] and longer postoperative hospital stay [6.50 (5.0-9.0) days vs 5.50 (3.0-6.50) days, P = 0.002]. The ice-breaking sign group showed significantly more dilatation in the proximal than distal bile duct. CONCLUSION:The ice-breaking sign, a newly identified radiological phenomenon, may influence therapeutic decisions in choledocholithiasis, suggesting laparoscopic common bile duct exploration as the preferred approach over endoscopic retrograde cholangiopancreatography in patients exhibiting this sign.

INTRODUCTION:Several techniques are used for laparoscopic treatment of gallstone disease with biliary duct stone, but each approach has indications and shortcomings. We have developed a modified laparoscopic transcystic biliary drainage for the management of cholecysto-choledocholithiasis. The hypothesis is that the modified laparoscopic transcystic biliary drainage will reduce morbidity from around 15% to less than 5%. The aim of this study is to assess the safety and efficacy of the modified laparoscopic transcystic biliary drainage. METHODS AND ANALYSIS:This is a prospective single-arm clinical trial to evaluate the safety and efficacy of the modified laparoscopic transcystic biliary drainage. The recruited 310 patients will be from Peking University Third Hospital. (Here, patients who meet the inclusion criteria will be included in the study, all patients will undergo laparoscopic cholecystectomy with concomitant laparoscopic exploration of the common bile duct and a modified laparoscopic transcystic drainage.) The primary endpoint is the postoperative morbidity and bile leakage. The secondary endpoints of the study are anchoring time of the C-tube, average daily drainage volume, early dislodgement of the C-tube, removal time of the C-tube, pancreatitis, residual stones and postoperative hospital stay. Recurrent stones and biliary stricture will be recorded during 6 months of follow-up. A two-tailed p<0.05 was considered statistically significant. SPSS for Windows V.21.0 (SPSS) software was used. ETHICS AND DISSEMINATION:This clinical trial was approved by the Medical Science Research Ethics Committee of Peking University Third Hospital (No. M2023223). TRIAL REGISTRATION NUMBER:NCT06011941. PROTOCOL VERSION:V.2, 23 November 2023.

BackgroundHepatolithiasis frequently presents with recurring cholangitis and complications. Oddi sphincter-preserved cholangioplasty with hepatico-subcutaneous stoma (OSPCHS), introduced in 1993, has shown favorable long-term results. Endoscopic sphincterotomy (EST) is commonly used, but its impact on OSPCHS outcomes remains unclear.MethodsFrom January 1993 to June 2021, 254 patients with hepatolithiasis underwent OSPCHS. A total of 31 patients had prior EST (group with EST, n = 31), while 223 did not (group without EST, n = 223). Perioperative and long-term outcomes were compared, and risk factors for stone and cholangitis recurrence were analyzed using a Cox regression model.ResultsThe immediate and final stone clearance rates were 67.3% and 81.9%, respectively. Patients with prior EST had higher rates of stone recurrence (57.7% vs. 35.7%, p = .031), shorter stone-free duration (median: 51.5 vs. 112.0 months, p = .001), higher cholangitis recurrence (45.2% vs. 25.6%, p = .023), and shorter cholangitis-free duration (median: 71.0 vs. 134.0 months, p = .006). Multivariable analysis identified bilateral intrahepatic stones (HR: 1.815, p = .010) and prior EST (HR: 3.157, p = .000) as independent risk factors for stone recurrence, whereas combined hepatectomy was a protective factor (HR: 0.448, p = .001). For cholangitis recurrence, male gender (HR: 2.308, p = .001) and EST (HR: 2.241, p = .009) were independent risk factors, while complete stone clearance reduced recurrence risk (HR: 0.423, p = .002).ConclusionPrior EST adversely affects the long-term outcomes of OSPCHS. Therefore, in the management of hepatolithiasis, emphasis should be placed on preserving the Oddi sphincter.

Cholangiocarcinoma (CCA) is an aggressive malignancy with poor clinical outcomes. The current "gold standard" diagnostic approach, endoscopic retrograde cholangiopancreatography (ERCP)-obtained biopsy, has a relatively low sensitivity (i.e., ∼50%). Here, we developed a bile-based diagnostic system using transient stimulated Raman scattering (T-SRS). Except for the tolerance to autofluorescence inherited from traditional SRS spectroscopy, T-SRS features quantum-limit spectral line shapes and is further improved with self-calibration ability in this research. These advantages make the acquired Raman spectra insensitive to the drifting of the excitation parameters, facilitating long-term reliability. Based on the T-SRS spectra in the C-H stretching region from 76 bile samples accumulated over more than 1 year, we demonstrated high accuracy (i.e., 85 ± 3%) and sensitivity (i.e., 87 ± 9%) for classification between CCA and benign diseases. The T-SRS acquisition only requires ∼9-μL bile samples and features a drastically improved time cost. This study suggests that the self-calibrated T-SRS analysis of the bile sample offers a promising approach for rapid CCA diagnosis.

Low efficacy of treatments and chemoresistance are challenges in addressing refractory hepatocellular carcinoma (HCC). SPINK1, an oncogenic protein, is frequently overexpressed in many HCC cases. However, the impact of SPINK1 on HCC treatment resistance remains poorly understood. Here, we elucidate the functions of SPINK1 on HCC therapy resistance. Analysis of SPINK1 protein level reveals a correlation between elevated SPINK1 expression and unfavorable prognosis. Furthermore, intercellular variations in SPINK1 expression levels are observed. Subsequent examination of single cell RNA-sequencing data from two HCC cohorts further suggest that SPINK1-high cells exhibit heightened activity in drug metabolic pathways compared to SPINK1-low HCC cells. High SPINK1 expression is associated with reduced sensitivities to both chemotherapy drugs and targeted therapies. Moreover, spatial transcriptomics data indicate that elevated SPINK1 expression correlates with non-responsive phenotype during treatment with targeted therapy and immune checkpoint inhibitors. This is attributed to increased levels of drug metabolic regulators, especially CES2 and CYP3A5, in SPINK1-high cells. Experimental evidence further demonstrates that SPINK1 overexpression induces the expression of CES2 and CYP3A5, consequently promoting chemoresistance to sorafenib and oxaliplatin. In summary, our study unveils the predictive role of SPINK1 on HCC treatment resistance, identifying it as a potential therapeutic target for refractory HCC.

BACKGROUND Cholangiocarcinoma (CCA) is a highly malignant cancer, characterized by frequent mucin overexpression. MUC1 has been identified as a critical oncogene in the progression of CCA. However, the comprehensive understanding of how the mucin family influences CCA progression and prognosis is still incomplete. AIM To investigate the functions of mucins on the progression of CCA and to establish a risk evaluation formula for stratifying CCA patients. METHODS Single-cell RNA sequencing data from 14 CCA samples were employed for elucidating the roles of mucins, complemented by bioinformatic analyses. Subsequent validations were conducted through spatial transcriptomics and immunohistochemistry. The construction of a risk evaluation model utilized the least absolute shrinkage and selection operator regression algorithm, which was further confirmed by independent cohorts and diverse data types. RESULTS CCA tumor cells with elevated levels of MUC1 and MUC4 showed activated nucleotide metabolic pathways and increased invasiveness. MUC5AC -high cells were found to promote CCA progression through WNT signaling. MUC5B -high cells exhibited robust cellular oxidation activities, leading to resistance against antitumoral treatments. MUC13 -high cells were observed to secret chemokines, recruiting and transforming macrophages into the M2-polarized state, thereby suppressing antitumor immunity. MUC16 -high cells were found to promote tumor progression through interleukin-1/nuclear factor kappa-light-chain-enhancer of activated B cells signaling upon interaction with neutrophils. Utilizing the expression levels of these mucins, a risk factor evaluation formula for CCA was developed and validated across multiple cohorts. CCA samples with higher risk factors exhibited stronger metastatic potential, chemotherapy resistance, and poorer prognosis. CONCLUSION Our study elucidates the functional mechanisms through which mucins contribute to CCA development, and provides tools for risk stratification in CCA.

Background Bilateral hepatolithiasis is an intractable disease and repeated attacks of acute cholangitis seriously threaten patient health. The surgical approaches evolve along with gradually greater understanding of its pathophysiology. Methods This is a retrospective cohort study for bilateral hepatolithiasis from January 1958 to December 2018. Before May 1993 (Group A, n = 70), three surgical approaches were adopted: 37 patients with common bile duct exploration (CBDE), 29 with choledochoenterostomy (CE) and four with partial hepatectomy (PH). After June 1993 (Group B, n = 150), 101 patients underwent Oddi sphincter-preserved cholangioplasty with hepatico-subcutaneous stoma (OSPCHS), and 16 with CBDE, 21 with CE, 12 with PH. The perioperative and long-term outcomes were compared. Results After 1993, the cholangitis recurrence rate significantly decreased from 49.2% to 20.9%, and the stone recurrence rate from 76.3% to 37.1% (both P < .001). Also, the stone-/cholangitis-free durations were prolonged significantly (median: 50.8 vs 26.4/49.6 vs 16.2 months, both P < .001). Preoperative cholangitis was an independent risk factor for stone recurrence (hazard ratio [HR] = 1.863, P = .018), and residual stone for cholangitis recurrence (HR = 2.838, P < .001). OSPCHS and PH were protective surgical approaches for recurrent stone (CBDE: reference; OSPCHS: HR = .469, P = .016, PH: HR = .219, P = .018) and cholangitis (CBDE: reference; OSPCHS: HR = .421, P = .010, PH: HR = .283, P = .093). Conclusions For bilateral hepatolithiasis, the management should focus on hepatobiliary lesion eradication and Oddi sphincter function preservation.

Magnetic resonance imaging (MRI) has been shown to be associated with prognosis in some tumors; however, the correlation in pancreatic ductal adenocarcinoma (PDAC) remains inconclusive. In this retrospective study, we ultimately included 136 patients and analyzed quantitative MRI parameters that are associated with prognosis and recurrence patterns in PDAC using survival analysis and competing risks models; all the patients have been operated on with histopathology and immunohistochemical staining for further evaluation. In intravoxel incoherent motion diffusion-weighted imaging (DWI), we found that pure-diffusion coefficient D value was an independent risk factor for overall survival (OS) (HR: 1.696, 95% CI: 1.003–2.869, p = 0.049) and recurrence-free survival (RFS) (HR: 2.066, 95% CI: 1.252–3.409, p = 0.005). A low D value (≤1.08 × 10−3 mm2/s) was significantly associated with a higher risk of local recurrence (SHR: 5.905, 95% CI: 2.107–16.458, p = 0.001). Subgroup analysis revealed that patients with high D and f values had significantly better outcomes with adjuvant chemotherapy. Distant recurrence patients in the high-D value group who received chemotherapy may significantly improve their OS and RFS. It was found that preoperative multiparametric quantitative MRI correlates with prognosis and recurrence patterns in PDAC. Diffusion coefficient D value can be used as a noninvasive biomarker for predicting prognosis and recurrence patterns in PDAC.

回顾性分析7例胆肠吻合术后吻合口狭窄行腹腔镜下重建手术患者的临床资料。6例顺利完成腹腔镜下胆肠吻合口重建，手术时长（232±73） min，出血（22±15） ml，术后住院时间（7±2） d，术后无严重并发症，仅1例发生无症状胆瘘。所有患者术后半年肝功恢复正常，4例患者肝内胆管恢复正常，2例患者肝内胆管回弹不良，其中1例再发肝内胆管结石行开腹胆肠吻合口重建及空肠盲襻皮下埋置术。本研究结果表明腹腔镜胆肠吻合口重建及取石术应用于胆肠吻合术后狭窄患者安全可行，近期效果良好。

Background: Surgical resection has been proposed for curable gallbladder cancer (GBCA); however, optimal preoperative evaluation and resection planning methods remain unestablished. The aim of this study was to establish the types of CT tumour radiological appearances in GBCA with a focus on its association with clinicopathologic features and its prognostic impact in curable GBCA. Methods: In all, 118 patients surgically treated for GBCA were identified and CT tumour radiological appearances were reviewed. Models were established and internally validated. Clinicopathologic variables and prognostic impact were analysed for correlation with tumour radiological appearance. Results: The classification and distribution of tumour radiological appearance in these patients was Type 1 (n = 14), Type 2 (n = 60), Type 3 (n = 21), Type 4 (n = 18), and undetermined (n = 5). Among the 113 patients, a higher tendency of T stage and incidence of lymph node metastasis was observed from Type 1 to Type 4. Most Type 1 patients were T1 stage, they have no lymph node involvement or recurrence. With a median follow-up of 25 months (range, 1-135 months), a clear prognostic difference was observed among the 4 types after surgical treatment (p < 0.001). Type 1 patients showed 100% 5-year survival rate. Among the 66 T2 tumours, both tumour location and tumour radiological appearance effectively stratified patient prognosis (p < 0.001, p = 0.007). Introducing tumour radiological appearance into tumour location enabled further prognostic stratification of the 35 T2h tumours (p < 0.001). Conclusions: Type of CT tumour radiological appearance is a predictor of tumour biology. It may improve preoperative evaluation and resection planning. (C) 2020 Published by Elsevier Ltd.

Intrahepatic cholangiocarcinomas (ICC) arise above the second order bile ducts, has a unique biological characteristics. Liver resection is the most effective treatment. Minimally invasive surgery, associating liver partition and portal vein ligation for staged hepatectomy, regional lymphadenectomy and liver transplantation are the main advancement of surgical treatment in ICC. Traditional CT and laboratory markers are incorporated to predict long-term outcomes after resection for ICC. Adjuvant chemotherapy and neoadjuvant therapies are proved to be the optimal treatment in selected patients. A lot of targetable mutations have been comprehensively characterised and clinical data is emerging on targeting these oncogenic drivers. Also, the role of immunotherapy has been examined and is an area of intense investigation. Herein, a deeper understanding of the molecular and genomic pathogenesis of this entity has led to several advances in the individualized treatment of ICC.

OBJECTIVE:To explore the feasibility and to compare the merits and demerits of laparoscopic and endoscopic approach in removing common bile duct stones in patients with gastrojejunostomy after gastrectomy.METHODS:Between January 2012 and December 2016, 25 patients with common bile duct stones after gastrojejunostomy received laparoscopic or endoscopic treatment in our centers. They were divided into laparoscopic group and endoscopic group based on treatment approaches for common bile duct stones, including 15 patients in laparoscopic group and 10 in endoscopic group. The clinical characteristics and outcomes between the two groups were retrospectively analyzed.RESULTS:Among the 25 patients with gastrojejunostomy, the method of reconstruction was Billroth II in 21 patients and Roux-en-Y in 4 patients. Six patients received laparoscopic or endoscopic treatment during the acute cholangitis state. Among the laparoscopic group, 5 patients with stones more than 1 cm, 7 patients with multiple stones, while in the endoscopic group, 3 patients with stones more than 1 cm and 4 patients with multiple stones. Fourteen patients in the laparoscopic group with coexisting gallbladder stones, and 6 of their common bile duct stones were successfully removed by transcystic approach without T tube drainage. Stone removals were successful in 4 patients of the endoscopic group by a single performance, including 3 patients with single small stone and one patient with multiple small stones. Two patients in the laparoscopic group were converted to open surgery for severe adhesion and one patient in the endoscopic group turned to laparoscopic operation for failing of finding papilla in the Roux-en-Y anastomotic status. The median hospital stays were 12 d and 10 d, respectively in the laparoscopic and endoscopic group. There were 3 patients with postoperative complications, including one patient with paralytic ileus in the laparoscopic group and 2 patients with biliary pancreatitis or bacteremia in the endoscopic group, and all of them recovered uneventfully with conservative treatment.CONCLUSION:Both laparoscopic and endoscopic approaches are feasible for removing stones in the common bile duct in patients with gastrojejunostomy after gastrectomy, and they complement each other. In addition, both techniques are difficult to conduct, and a technical competence should be considered in selection of each method.

Ingestion of jujube pits is a common clinical problem, which can be difficult to diagnose and life-threatening if accompanied with intestinal perforation and peritonitis. In this study, 18 cases of intestinal perforation caused by ingestion of jujube pits were reviewed and summarized to discuss the clinical characteristics, diagnosis and treatments.

INTRODUCTION:Pancreatic cancer (PC) is one of the most aggressive malignancies, and it's difficult to diagnosis PC at an early stage, which leads to the poor prognosis of PC.OBJECTIVES:To identifiy the possible prognosis or dignosis metabolite biomarkers in the serum exosome of PC patients.METHODS:We employed LC-DDA-MS based untargeted lipidomic analysis to search for potential candidate biomarkers in the serum exosome of PC patients. Then LC-MRM-MS based targeted lipid quantification was used to validate the trends of the candidate biomarkers in larger sample cohorts.RESULTS:About 270 lipids belonging to 20 lipid species were found significantly dysregulated between the serum exosome of PC patients and healthy controls. 61 of them were validated in larger samples size. We further analysis the correlation between these dysregulated lipids and other PC related factors, and results show that LysoPC 22:0, PC (P-14:0/22:2) and PE (16:0/18:1) are all associated with tumor stage, CA19-9, CA242 and tumor diameter. What's more, PE (16:0/18:1) is also found to be significantly correlated with the patient's overall survival.CONCLUSION:These data reveal dysregulated lipids in serum exosome of PC patients, which have potential to be biomarkers for diagnosis, or unveil pathological relationship between exosome and PC progress.

The aim of the present study was to evaluate the biological and prognostic implications of the superior mesenteric artery (SMA) boundary on preoperative abdominal contrast-enhanced computed tomography (CE-CT) for resectable adenocarcinoma of the pancreatic head. A total of 121 patients treated over a 6-year period at Peking University Third Hospital (Beijing, China) were included in the present study. The pattern of the SMA boundary was investigated on preoperative CE-CT and detailed pathological analysis of the extrapancreatic plexus [the pancreatic head plexus II (PLX-II) located on the right edge of the SMA] was performed. The results revealed that the radiological SMA boundary was associated with the grade of parasympathetic neurogenesis (P=0.014) in PLX-II, and was predictive of postoperative disease-free survival (P=0.014) and liver metastasis (P=0.013). Therefore, it was proposed that extrapancreatic parasympathetic neurogenesis may account for the different patterns of the SMA boundary on preoperative abdominal CE-CT, and affect the prognosis, particularly for liver metastasis in resectable pancreatic head adenocarcinoma.

Our study was aimed at finding the ultrasound (US) features of xanthogranulomatous cholecystitis (XGC) and evaluating the usefulness of US in differentiating XGC from gallbladder carcinoma (GBC). Through use of an electronic medical record system and the picture archiving and communication system, 31 cases of XGC and 52 cases of GBC with both sonograms and pathologic results were identified. Sonographic features of the abnormal gallbladder were evaluated. The smooth and intact interface between gallbladder lumen and mucosa was observed in most XGC cases (23/31, 74.2%) but in no GBC cases. XGC featured hyper-echoic foci, small hypo-echoic nodules and a layered appearance in the lesion, which were more frequently seen in the XGC group than in the GBC group. In conclusion, US may prove useful in the differential diagnosis of XGC and GBC, but more studies are required.

Introduction: Second radical resection is recommended for incidental gallbladder cancer (IGBCA). Laparoscopic surgery has received acceptable outcomes for the management of suspected gallbladder cancer, but few studies have demonstrated the oncologic outcomes of laparoscopic second surgery for IGBCA. This study was undertaken to determine the safety and feasibility of a laparoscopic second radical resection for IGBCA based on our 10 years experience. Method: Retrospective analysis of IGBCA patients (detected after a postoperative pathological examination) who underwent laparoscopic second radical resections between July 2007 and March 2017 were conducted. The results were compared with IGBCA patients who underwent open radical resections during the same period. Result: 17 patients with IGBCA underwent second radical resections, and residual disease was identified in 5 patients. Among the 17 patients, 8 patients who underwent laparoscopic second radical resections formed the study group (Group 1), including 1 T1bN0 and 7 T2N0; the remaining 9 patients who underwent open second radical resections formed the control group (Group 2), including 2 T1bN0, 6 T2N0 and 1 T2N1. The median operating time and blood loss were no difference between the two groups. Only one patient in each group had post-operative morbidity. The median lymph node yield was 5 (1–11) in Group 1, and was comparable to that in Group 2 (P = 0.593). During a median follow-up of 41 (6–125) months, no patient in Group 1 developed a recurrence, 2 patients in Group 2 developed recurrence and 1 of them died for recurrence. Conclusion: Laparoscopic second radical resection is safe and feasible in selected patients with IGBCA, and the results were comparable to open surgery.

Objective: To explore the feasibility of laparoscopic treatment for incidental gallbladder cancer(IGBCA) and analyze the factors influencing prognosis. Methods: A retrospective study of 71 patients with IGBCA received laparoscopic treatment at Department of General Surgery, Peking University Third Hospital from January 2007 to December 2016 was conducted,the clinicopathological data and prognosis were analyzed. There were 18 males and 53 females,aged 23 to 81 years. They were divided into two groups based on the presence of intraluminal mass in the gallbladder. Sixty-five of the 71 patients received laparoscopic radical resection, the prognosis of them were compared with 14 patients with open radical resection. Results: Among the 71 patients,65 patients received radical resection,3 patients simple gallbaldder resection and 3 patients palliative resection. Postoperative complications occurred in 6 patients. IGBCA were detected by frozen section in 57 patients,with the accuracy of 96.5%,while the accuracy of T stage is 43.8% in the 48 patients received T stage evaluation during frozen section examination. The T stages based on final pathology were Tis(n=6),T1a(n=5),T1b(n=10),T2(n=46),and T3(n=4).The number of harvested lymph node was 4.7±2.9(range:2-12).There are 14 patients with lymph node metastasis. The 50 patients with intraluminal gallbladder mass include 21 patients with ≤T1b stage and 29 patients with ≥T2 stage, while the 21 patients without intraluminal gallbladder mass are all with ≥T2 stage. The median survival time of the 71 patients was 33 months, with the 5-year cumulative survival rate 67.3%. The 5-year cumulative survival rate is 78.5% for the 65 patients who received radical resection,comparable with those who received open radical resection(P=0.485).Univariate analysis demonstrated that T stage, lymph node metastasis, G grade, lymphovascular invasion, neural invasion, acute cholecystectomy, bile spillage, gallbladder mass and preoperative CA19-9/CEA were the most important prognostic factors(P<0.05). Conclusions: Laparoscopic treatment for IGBCA is feasible, especially for those with intraluminal gallbladder mass. The accuracy of frozen section examination in evaluating T stage is low.

Objective To explore the feasibility and safety of laparoscopic transcystic common bile duct stone extraction and cholecystectomy in pregnant patients with choledocholithiasis.Methods A retrospective analysis of 4 pregnant patients with choledocholithiasis was performed.The clinicoradiologic,perioperative and follow up data were analyzed.Results The 4 patients were admitted for acute cholangitis at their second trimester of pregnancy.Preoperative MRCP demonstrated that the diameter of the common bile duct stone was less than that of the cystic duct.Laparoscopic transcystic common bile duct stone extraction and cholecystectomy were successfully conducted.Plasma shock wave lithotripsy was applied in one patient with impacted gallstone,intraoperative cholangiography was conducted in one patient with suspected residual stone.There was not major post-op complications nor stone recurrence in the follow up postoperatively.They all delivered a healthy baby on the expected date of childbirth.Conclusions Simutaneously laparoscopic transcystic common bile duct stone extraction and cholecystectomy in pregnant patients with choledocholithiasis is feasible and safe.