ObjectiveTo explore the amelioration of cognitive dysfunction in diabetes mellitus （DM） by Jianpi Qinghua prescription （JPQH） based on type 2 diabetes （T2DM） model rats. MethodFifty healthy male Wistar rats of SPF grade were randomly divided into control group （n=10） and experimental group （n=40）. The rats in the control group were fed conventionally， while those in the experimental group were fed on a high-sugar， high-fat diet for six weeks and administered with streptozotocin （STZ） for the induction of the DM model. The model rats were randomly divided into model group， sitagliptin group （1.2 g·L^-1）， pioglitazone group （0.8 g·L^-1）， and JPQH group （1.3 g·mL^-1）， with 10 rats in each group. After six weeks of drug intervention， the changes in body weight， blood glucose， and other related indexes of each group were recorded. Enzyme-linked immunosorbent assay （ELISA） was performed to detect the levels of tumor necrosis factor-α （TNF-α）， interleukin-1β （IL-1β）， and interleukin-6 （IL-6） in the peripheral blood and brain. The Morris water maze test was used to evaluate the cognitive function in rats. Hematoxylin-eosin （HE） staining was used to observe the pathological morphology of the hippocampal CA region. The amyloid β-protein 40 （Aβ₄₀） level was detected by immunohistochemistry. The protein expression of t-tau and p-tau in hippocampal neurons of rats was detected by Western blot. ResultCompared with blank group， the body weight of model group was significantly decreased （P<0.05）， blood glucose level was significantly increased （P<0.01）， inflammatory cytokines TNF-α and IL-1β were increased （P<0.05）， learning and spatial ability were significantly decreased （P<0.01）， the arrangement of hippocampal cells was loose and disordered， and the intercellular space was significantly increased. The number of cells decreased significantly， and the expression of Aβ₄₀ increased significantly. and increased t-tau and p-tau protein content in the hippocampus （P<0.01）. Compared with model group， the JPQH group showed reduced blood glucose （P<0.01）， decreased TNF-α and IL-1β levels in the peripheral blood and cerebrospinal fluid （P<0.05）， a downward trend of IL-6 without a statistical difference， improved learning and spatial memory ability （P<0.01）， densely arranged cells in the hippocampal CA1 area， increased cell number， reduced Aβ₄₀ expression， and decreased p-tau protein expression （P<0.05）. ConclusionJPQH can prevent cognitive dysfunction in DM by reducing inflammatory factor levels， decreasing neurotoxicity caused by Aβ₄₀ deposition， and inhibiting hyperphosphorylation of tau protein in DM rats.

Objective:To investigate the establishment and application value of a radio-mics prediction model for lymph node metastasis of gallbladder carcinoma based on dual-phase enhanced computed tomography (CT).Methods:The retrospective cohort study was conducted. The clinicopathological data of 194 patients with gallbladder carcinoma who were admitted to the First Affiliated Hospital of Xi'an Jiaotong University from January 2012 to December 2020 were collected. There were 70 males and 124 females, aged (64±10)years. All patients underwent curative-intent resection of gallbladder carcinoma. A total of 194 patients were randomly divided into 156 cases in training set and 38 cases in test set according to the ratio of 8:2 based on random number method in R software. The training set was used to establish a diagnostic model, and the test set was used to validate the diagnostic model. After the patients undergoing CT examination, image analysis was performed, radiomics features were extracted, and a radiomics model was established. Based on clinicopathological data, a nomogram prediction model was established. Observation indicators: (1) lymph node dissection and histopathological examination results; (2) establishment and characteristic analysis of a radiomics prediction model; (3) analysis of influencing factors for lymph node metastasis of gallbladder carcinoma; (4) establishment of a nomogram prediction model for lymph node metastasis; (5) comparison of the predictive ability between the radiomics prediction model and nomogram prediction model for lymph node metastasis. Measurement data with normal distribution were represented as Mean± SD, and measurement data with skewed distribution were represented as M(range). Count data were expressed as absolute numbers, and comparison between groups was performed by the chi-square test. Univariate analysis was conducted by the chi-square test, and multivariate analysis was performed by the Logistic regression model forward method. The receiver operating characteristic curve was drawn, and the area under curve, decision curve, confusion matrix were used to evaluate the predictive ability of prediction models. Results:(1) Lymph node dissection and histopathological examination results. Of the 194 patients, 182 cases underwent lymph node dissection, with the number of lymph node dissected as 8(range, 1?34) per person and the number of positive lymph node as 0(range, 0?11) per person. Postoperative histopathological examination results of 194 patients: 122 patients were in stage N0, with the number of lymph node dissected as 7(range, 0?27) per person, 48 patients were in stage N1, with the number of lymph node dissected as 8(range, 2?34) per person and the number of positive lymph node as 1(range, 1?3) per person, 24 patients were in stage N2, with the number of lymph node dissected as 11(range, 2?20) per person and the number of positive lymph node as 5(range, 4?11) per person. (2) Establishment and characteristic analysis of a radiomics prediction model. There were 107 radiomics features extracted from 194 patients, including 18 first-order features, 14 shape features and 75 texture features. According to the intra-group correlation coefficient and absolute median difference of each radiomics feature, mutual information, Select K-Best, least absolute shrinkage and selection operator regression were conducted to further reduce dimensionality. By further combining 5 different machine learning algorithms including random forest, gradient boosting secession tree, support vector machine (SVM), K-Nearest Neighbors and Logistic regression, the result showed that the Select K-Best_SVM model had the best predictive performance after analysis, with the area under receiver operating characteristic curve as 0.76 in the test set. (3) Analysis of influencing factors for lymph node metastasis of gallbladder carcinoma. Results of univariate analysis showed that systemic inflammation response index, carcinoembryonic antigen (CEA), CA19-9, CA125, radiological T staging and radiological lymph node status were related factors for lymph node metastasis of patients with gallbladder cancer ( χ2=4.20, 11.39, 5.68, 11.79, 10.83, 18.58, P<0.05). Results of multivariate analysis showed that carcinoembryonic antigen, CA125, radiological T staging (stage T3 versus stage T1?2, stage T4 versus stage T1?2), radiological lymph node status were independent influencing factors for lymph node metastasis of patients with gallbladder carcinoma [ hazard ratio=2.79, 4.41, 5.62, 5.84, 3.99, 95% confidence interval ( CI) as 1.20?6.47, 1.81?10.74, 1.50?21.01, 1.02?33.31, 1.87?8.55, P<0.05]. (4) Establishment of a nomogram prediction model for lymph node metastasis. A nomogram prediction model was established based on the 4 independent influencing factors for lymph node metastasis of gallbladder carcinoma, including CEA, CA125, radiological T staging and radiological lymph node status. The concordance index of the nomogram model was 0.77 (95% CI as 0.75?0.79) in the training set and 0.73 (95% CI as 0.68?0.72) in the test set, respectively. (5) Comparison of the predictive ability between the radiomics predic-tion model and nomogram prediction model for lymph node metastasis. The receiver operating characteristic curve showed that the areas under the curve of Select K-Best_SVM radiomics model were 0.75 (95% CI as 0.74?0.76) in the training set and 0.76 (95% CI as 0.75?0.78) in the test set, respectively. The areas under the curve of nomogram prediction model were 0.77 (95% CI as 0.76?0.78) in the training set and 0.70 (95% CI as 0.68?0.72) in the test set, respectively. The decision curve analysis showed that Select K-Best_SVM radiomics model and nomogram prediction model had a similar ability to predict lymph node metastasis. The confusion matrix showed that Select K-Best_SVM radiomics model had the sensitivity as 64.29% and 75.00%, the specificity as 73.00% and 59.09% in the training set and test set, respectively. The nomogram had the sensitivity as 51.79% and 50.00%, the specificity as 80.00% and 72.27% in the training set and test set, respectively. Conclusion:A dual-phase enhanced CT imaging radiomics prediction model for lymph node metastasis of gallbladder carcinoma is successfully established, and its predictive ability is good and consistent with that of nomogram.

【Objective】 To analyze the clinical characteristics of patients with primary carcinoma of the gallbladder (PGC) who underwent radical intent resection in our center in the last decade and the therapeutic effects of the operation. 【Methods】 A single-institution database of The First Affiliated Hospital of Xi'an Jiaotong University from January 2008 to December 2017 was queried for patients with PGC who had received surgical treatment. The data were studied retrospectively to assess the trend of total admission, radical resection rate, prognosis and clinicopathological characteristics of PGC in the last decade. 【Results】 A total of 2 159 patients with PGC were treated in our institution from 2008 to 2017. Of them, 1072 were surgically treated and 503 underwent radical intent resection. In the past 5 years (2013-2017), the radical resection rate was 26.5% (319 cases of the operation), which was significantly higher than that in 2008-2012 (19.2%) (P<0.001). The overall survival time of the patients who underwent radical resection was 32 months, and the 1-, 3-, and 5-year survival rate was 68.9%, 48.4% and 41.6%, respectively. Compared with the data of 2008-2012, the proportion of the patients with preoperative jaundice decreased in the past 5 years (7.8% vs. 14.7%, P<0.05), that of the patients who underwent D2 lymphadenectomy (74.0% vs. 26.1%, P<0.001) increased significantly (P<0.001), the total number of lymph nodes obtained from the dissection (8.07±5.18 vs. 5.89±3.14, P<0.001) increased significantly (95.6% vs. 89.7%, P<0.05), and the proportion of R0 resection (95.6%) increased significantly (P<0.05). 【Conclusion】 The diagnosis and treatment of radical intent resection of PGC in our hospital have changed significantly in the last decade, mainly reflected in the extension of lymphadenectomy, increase in R0 resection rate and decrease in patients with preoperative jaundice.

Objectives: To propose a novel clinical classification system of gallbladder cancer, and to investigate the differences of clinicopathological characteristics and prognosis based on patients who underwent radical resection with different types of gallbladder cancer. Methods: The clinical data of 1 059 patients with gallbladder cancer underwent radical resection in 12 institutions in China from January 2013 to December 2017 were retrospectively collected and analyzed.There were 389 males and 670 females, aged (62.0±10.5)years(range:22-88 years).According to the location of tumor and the mode of invasion,the tumors were divided into peritoneal type, hepatic type, hepatic hilum type and mixed type, the surgical procedures were divided into regional radical resection and extended radical resection.The correlation between different types and T stage, N stage, vascular invasion, neural invasion, median survival time and surgical procedures were analyzed.Rates were compared by χ² test, survival analysis was carried by Kaplan-Meier and Log-rank test. Results: Regional radical resection was performed in 940 cases,including 81 cases in T1 stage,859 cases in T2-T4 stage,119 cases underwent extended radical resection;R0 resection was achieved in 990 cases(93.5%).The overall median survival time was 28 months.There were 81 patients in Tis-T1 stage and 978 patients in T2-T4 stage.The classification of gallbladder cancer in patients with T2-T4 stage: 345 cases(35.3%)of peritoneal type, 331 cases(33.8%) of hepatic type, 122 cases(12.5%) of hepatic hilum type and 180 cases(18.4%) of mixed type.T stage(χ²=288.60,P<0.01),N stage(χ²=68.10, P<0.01), vascular invasion(χ²=128.70, P<0.01)and neural invasion(χ²=54.30, P<0.01)were significantly correlated with the classification.The median survival time of peritoneal type,hepatic type,hepatic hilum type and mixed type was 48 months,21 months,16 months and 11 months,respectively(χ²=80.60,P<0.01).There was no significant difference in median survival time between regional radical resection and extended radical resection in the peritoneal type,hepatic type,hepatic hilum type and mixed type(all P>0.05). Conclusion With application of new clinical classification, different types of gallbladder cancer are proved to be correlated with TNM stage, malignant biological behavior and prognosis, which will facilitate us in preoperative evaluation,surgical planning and prognosis evaluation.

Objective To investigate the clinical effects and prognostic factors of radical surgery for primary gallbladder cancer (GBC).Methods The retrospective case-control study was conducted.The clinicopathological data of 305 patients with primary GBC who underwent radical Ro resection in the First Affiliated Hospital of Xi'an Jiaotong University from 2013 to 2017 were collected,including 108 males and 197 females,aged from 30 to 88 years,with a median age of 62 years.According to the different tumor staging,patients underwent corresponding operation and adjuvant treatment based on the postoperative indication of chemotherapy.Observation indicators:(1) results of imaging and laboratory examinations;(2) treatment situations:① surgical situations,② postoperative adjuvant treatment;(3) results of postoperative pathological examination;(4) followup;(5) prognostic factors analysis.Follow-up using outpatient examination and telephone interview was performed to detect postoperative survival up to December 5,2018,and death was used as the end point.Measurement data with normal distribution were represented as Mean±SD.Measurement data with skewed distribution were described as M (range).Count data were represented as percentage.The survival curve and survival rate were respectively drawn and calculated using the Kaplan-Meier method.The univariate analysis and multivariate analysis were respectively done using the Log-rank test and COX regression model.Results (1) Results of imaging and laboratory examinations:results of imaging examination showed that diagnostic rates of ultrasound,CT and MRI examination were respectively 84.06％ (174/207),85.71％ (168/196) and 63.11％ (65/103).Results of laboratory examination showed that the positive rates of CA19-9,CA125 and carcinoembryonic antigen (CEA) were respectively 55.34％ (145/262),48.06％ (124/258) and 46.15％ (126/273).(2) Treatment situations:① surgical situations:305 patients underwent radical R0 resection for primary GBC,including 145 undergoing liver wedge resection + D2 lymph node dissection,61 undergoing liver wedge resection + D1 lymph node dissection,55 undergoing liver Ⅳ B and Ⅴ segmentectomy + D2 lymph node dissection,11 undergoing liver Ⅳ B and Ⅴ segrnentectomy + D1 lymph node dissection,9 undergoing right hepatectomy + D2 lymph node dissection,5 undergoing liver wedge resection + D2 lymph node dissection + partial colectomy,4 undergoing pancreaticoduodenectomy,3 undergoing simple cholecystectomy in Tis stage,3 undergoing right hepatectomy + D1 lymph node dissection,2 undergoing liver ⅣB and Ⅴ segmentectomy + D2 lymph node dissection + partial colectomy,1 undergoing liver Ⅳ B and Ⅴ segmentectomy + resection and reconstruction of portal vein + D2 lymph node dissection,1 undergoing liver ⅣB and Ⅴ segmentectomy + D2 lymph node dissection + partial resection of the stomach or duodenum,1 undergoing pancreaticoduodenectomy + resection and reconstruction of portal vein,1 undergoing right hepatectomy + pancreaticoduodenectomy,1 undergoing right hepatic lobectomy + partial gastrectomy + D2 lymph node dissection,1 undergoing right hepatic lobectomy + D1 lymph node dissection and 1 undergoing right hepatic trilobectomy + D2 lymph node dissection.Of 94 patients with unsuspected GBC,78 who were diagnosed in the other hospitals received salvage surgery in the authors' center.Twenty-one patients had postoperative surgery-related complications,including 11 with bile leakage,8 with pulmonary infection and 2 with abdominal bleeding.Two patients died in the perioperative period.② Postoperative adjuvant treatment:26 patients underwent postoperative adjuvant chemotherapy.Chemotherapy regimen:gemcitabine + oxaliplatin were used in 12 patients,gemcitabine + tegafur in 7 patients,gemcitabine + cisplatin in 6 patients,oxaliplatin + tegafur in 1 patient.(3) Results of postoperative pathological examination.The postoperative pathological type of 305 patients:257,23,6,5,4,3,3,2,1 and 1 patients were respectively confirmed as pure adenocarcinoma,adenocarcinoma combined with squamous cell carcinoma,adenocarcinoma combined with neuroendocrine carcinoma,mucinous adenocarcinoma,neuroendocrine carcinoma,adenocarcinoma combined with mucinous carcinoma,squamous cell carcinoma,sarcomatoid carcinoma,adenocarcinoma combined with sarcomatoid carcinoma,adenocarcinoma combined with signet-ring cell carcinoma.Degree of tumor differentiation:highdifferentiated,moderate-differentiated and low-differentiated tumors were detected in 37,130 and 121 patients,respectively,17 with unknown differentiated degree.Of 305 patients,16 and 32 patients had respectively vascular invasion and nerve invasion.The number of lymph node dissected of 305 patients was 8±5,with positive lymph node of 0 (range,0-9),including 121 with lymphatic metastasis (26 with jumping lymphatic metastasis).TNM staging of 305 patients:stage 0,Ⅰ,Ⅱ,ⅢA,ⅢB,ⅣA and ⅣB were detected in 7,18,13,137,57,11 and 62 patients,respectively.(4) Follow-up:245 of 305 patients were followed up for 18.0 months (range,6.0-70.0 months).The survival time,1-and 3-year survival rates were respectively 29.5 months (range,0.5-69.9 months),71.6％ and 45.8％.One hundred and twenty-two patients died during the follow-up.(5) Prognostic factors analysis:the results of univariate analysis showed that preoperative level of bilirubin,pathological type,degree of tumor differentiation,liver invasion,vascular invasion,nerve invasion,T staging,N staging and postoperative chemotherapy were factors affecting prognosis of patients with primary GBC (x2 =10.26,3.96,45.89,34.64,12.75,27.05,35.09,39.44,4.40,P＜0.05).The results of multivariate analysis showed that low-differentiated tumor,liver invasion and N2 staging were independent risk factors affecting prognosis of patients with primary GBC [odds ratio (OR)=1.90,1.71,1.46,95％ confidence interval (CI):1.34-2.70,1.15-2.52,1.17-1.82,P＜0.05],and postoperative chemotherapy was a protective factor affecting prognosis of patients with primary GBC (OR=0.35,95％ CI:0.15-0.82,P＜0.05).Conclusions For patients with primary GBC undergoing radical resection,D2 lymph node dissection should be performed routinely.The low-differentiated tumor,liver invasion and N2 staging are independent risk factors affecting prognosis of patients,and postoperative chemotherapy is a protective factor.

Reoperation on biliary tract diseases is a kind of complex and difficult surgery,with the high risk and recurrence rate.Benign biliary tract diseases included residual and recurrence of bile duct stone,bile duct injury and benign biliary stricture,which are still the most common causes for reoperation.The common causes,application of the precision surgery and new mode of multidisciplinary team (MDT) for the reoperation on benign biliary diseases were explored in this paper.With the techniques developments of minimal invasive and precision surgery,the new mode of MDT for the reoperation on benign biliary diseases will provide the best individual diagnosis and treatment to the patients.

Objective: :To establish a quality standard for glycyrrhizic acid in compound loquat and pentoryverine granule.Methods: TLC was applied in the qualitative detection of glycyrrhizic acid.An HPLC method was used for the quantitative determination of glycyrrhizic acid.A C 18 (250 mm× 4.6 mm ,5 μm)column was used.The mobile phase was a mixture of methanol-0.2 mol·L-1 ammonium acetate-acetic acid(60∶39∶1).The flow rate was at 1.0 ml·min-1 , and the detection wavelength was at 250 nm.Results: The TLC spots were clear and well separated without interference from the negative sample.The calibration curves were linear within the range of 0.01-1.01 g·L-1 (r=1.000 0).The average recovery was 103.2% (RSD %=1.8% , n =9).Conclusion: The method is simple and accurate, which can be used for the quality control of compound loquat and pentoryverine granule.

Objective To explore the feasibility,efficacy and safety of endoscopic retrograde cholangio?pancreatography ( ERCP ) drainage during peroperation of hilar cholangiocarcinoma for alleviate jaun?dice. Methods Nineteen cases patients with hilar cholangiocarcinoma who were treated with ERCP in the First Affiliated Hospital of Xi'an Jiao Tong University from January 2013 to December 2013,the drainage way,efficient rate,complication rate,and surgical situation were retrospective analyzed. Results Bilateral endoscopic drain?age was one?time achieved in all 19 patients. Among them,Eendoscopic nasobiliary drainage( ENBD) for unilat?eral bilateral drainage was 4 cases,ENBD and plastic stent for unilateral( left or right) drainage was 9 cases,EN?BD and plastic stent for bilateral drainage was 6 cases. The drainage efficiency rate was 89. 5% ( 17/19) . Serum alanine aminotransferase(ALT),total bilirubin(TBIL),direct bilirubin(DBIL),alkaline phosphatase(ALP) and Prothrombin time (PT) were significantly decreased after 7days post?ERCP((208. 4±47. 7) U/L vs. (90. 3 ±31. 57) U/L,(421. 7±85. 9) μmol/L vs. (150. 1±49. 7) μmol/L,(294. 6±30. 6) μmol/L vs. (95. 4±23. 2)μmol/L,(853. 1±133. 7) U/L vs. (600. 0±116. 4) U/L,(17. 7±1. 8) s vs. (13. 8±1. 0) s;P=0. 000,0. 001, 0. 000,0. 001,0. 004) . There were 6 cases occurred ERCP postoperative complications,including 2 cases of hy?peramylasemia, 1 case of pancreatitis, 3 cases of cholangitis. Seven cases of hilar cholangiocarcinoma patients were received hilar radical surgery by combination caudate lobectomy of the left or right hepatectomy,no postop?erative cholangitis was occurred. Conclusion ERCP biliary drainage is an important means to ensure the perio?perative safety and efficacy of hilar cholangiocarcinoma.

Objective To observe the therapeutic effects of Liuwei Shunji Capsule on survival state, visceral hypersensitivity, the content of 5-HT of model rats with liver depression and spleen deficiency-type irritable bowel syndrome (IBS), and explore its mechanism.Methods SD rats were randomly divided into normal group, model group, pinaverium bromide group and Liuwei Shunji Capsule of high, medium and low dose groups. Senna with restraint stress was used in duplicating liver depression and spleen deficiency-type IBS model. From the second day after the model was established, each drug treatment group was administered with corresponding drugs once a day for two weeks. The effects of Liuwei Shunji Capsule on survival state, visceral hypersensitivity, the content of 5-HT in serum and hypothalamus were observed.Results Compared with model group, Liuwei Shunji Capsule could raise weight growth rate of model rats with liver depression and spleen deficiency-type IBS (P<0.05), improve their diarrhea, fatigue demeanor, fur quality, irritability and other symptoms, significantly decrease their visceral hypersensitivity, the content of 5-HT in serum and hypothalamus (P<0.01).Conclusion Liuwei Shunji Capsule can effectively improve survival state and intestinal disorders of rats with liver depression and spleen deficiency-type IBS, and the mechanism of treatment could be realized through regulating 5-HT level.

Objective To investigate the efficacy of concomitant precise hemihepateetomy for the treatment of hilar cholangiocarcinoma.Methods The clinical data of 38 patients with hilar cholangiocarcinoma who received concomitant precise hemihepatectomy at the First Affiliated Hospital of Xi'an Jiaotong University from January 2009 to October 2012 were retrospectively analyzed.All patients were examined by B ultrasonography,computed tomography (CT),magnetic resonance cholangiopancreatography (MRCP) and CT angiography (CTA)preoperatively.The hepatic function was tested before operation.Of the 7 patients with obstructive jaundice,5 received percutaneous transhepatic cholangial drainage,and 2 received endoscopic nosalbiliary drainage.Surgical procedures were determined according to the results of imaging examination.The resection of hilar cholangiocarcinoma,postoperative histopathological examination,pre-and postoperative hepatic function and prognostic indicators were analyzed.The count data and measurement data were analyzed using the chi-square test and t test,respectively; the survival curve was drawn by Kaplan-Meier method,and the survival rate was analyzed using the Log-rank test.COX proportion hazards model was used for multivariate analysis.Results The positive rates of B ultrasonography,CT and MRCP were 65.8％ (25/38),71.1％ (27/38) and 89.5％ (34/38),respectively.The results of 5 patients who received CTA were positive.Concomitant left hemihepatectomy was performed on 28 patients,concomitant right hemihepatectomy on 10 patients; concomitant caudate lobectomy on 22 patients,concomitant resection and reconstruction of portal vein on 4 patients (including 1 patient who received left hepatic vein repair),concomitant hepatic artery resection on 12 patients (including 3 patients who received hepatic artery reconstruction).Of the 38 patients,R0 resection was performed on 32 patients,R1 resection on 4 patients,R2 resection on 2 patients.Hepatic function indicators including total bilirubin,direct bilirubin,alkaline phosphatase,gamma-glutamyl-transferase,alanine aminotransferase and aspartate aminotransferase were significantly decreased after operation (t =7.799,8.445,5.697,6.633,4.469,4.140,P ＜ 0.05).Two patients died perioperatively,with the mortality rate of 5.3％ (2/38).The main postoperative complications included bile leakage and hepatic function insufficiency,with the incidences of 28.9％ (11/38) and 21.1％ (8/38),respectively.Postoperative histopathological findings included 31 patients with invasive adenocarcinoma,5 patients with nodular adenocarcinoma,1 patient with mucinous adenocarcinoma and 1 patient with adenosquamous carcinoma.The overall 1-,2-,3-year survival rates were 66％,37％ and 21％,and the median survival time was 22.0 months.There were significant differences in the survival rates between patients who received R0 resection and those with R1/R2 resection,and between patients with N0 and N1/N2 stage (x2 =4.516,10.397,P ＜ 0.05).The results of multivariate analysis showed that positive margin and lymph node metastasis were prognostic indicators.Conclusions Concomitant precise hemihepatectomy has significantly improved the radical resection rate and the efficacy of treatment for hilar cholangiocarcinoma.Comprehensive preoperative imaging examination and hepatic function test are important for the assessment for resectability of hilar cholangiocarcinoma.Selective preoperative biliary drainage are key points to decrease postoperative morbidity and morality.