Transcriptional Landscape of Human Tissue Lymphocytes Unveils Uniqueness of Tumor-Infiltrating T Regulatory Cells.

Tumor-infiltrating regulatory T lymphocytes (Treg) can suppress effector T cells specific for tumor antigens. Deeper molecular definitions of tumor-infiltrating-lymphocytes could thus offer therapeutic opportunities. Transcriptomes of T helper 1 (Th1), Th17, and Treg cells infiltrating colorectal or non-small-cell lung cancers were compared to transcriptomes of the same subsets from normal tissues and validated at the single-cell level. We found that tumor-infiltrating Treg cells were highly suppressive, upregulated several immune-checkpoints, and expressed on the cell surfaces specific signature molecules such as interleukin-1 receptor 2 (IL1R2), programmed death (PD)-1 Ligand1, PD-1 Ligand2, and CCR8 chemokine, which were not previously described on Treg cells. Remarkably, high expression in whole-tumor samples of Treg cell signature genes, such as LAYN, MAGEH1, or CCR8, correlated with poor prognosis. Our findings provide insights into the molecular identity and functions of human tumor-infiltrating Treg cells and define potential targets for tumor immunotherapy.

Predicting the Risk of Morbidity by GLIM-Based Nutritional Assessment and Body Composition Analysis in Oncologic Abdominal Surgery in the Context of Enhanced Recovery Programs : The PHase Angle Value in Abdominal Surgery (PHAVAS) Study.

BACKGROUND: Preoperative nutritional status and body structure affect short-term prognosis in patients undergoing major oncologic surgery. Bioimpedance vectorial analysis (BIVA) is a reliable tool to assess body composition. Low BIVA-derived phase angle (PA) indicates a decline of cell membrane integrity and function. The aim was to study the association between perioperative PA variations and postoperative morbidity following major oncologic upper-GI surgery. PATIENTS AND METHODS: Between 2019 and 2022 we prospectively performed BIVA in patients undergoing surgical resection for pancreatic, hepatic, and gastric malignancies on the day before surgery and on postoperative day (POD) 1. Malnutrition was defined as per the Global Leadership Initiative on Malnutrition criteria. The PA variation (ΔPA) between POD1 and preoperatively was considered as a marker for morbidity. Uni and multivariable logistic regression models were applied. RESULTS: Overall, 542 patients with a mean age of 64.6 years were analyzed, 279 (51.5%) underwent pancreatic, 201 (37.1%) underwent hepatobiliary, and 62 (11.4%) underwent gastric resections. The prevalence of preoperative malnutrition was 16.6%. The overall morbidity rate was 53.3%, 59% in those with ΔPA < -0.5 versus 46% when ΔPA ≥ -0.5. Age [odds ratio (OR) 1.11; 95% confidence interval (CI) (1.00; 1.22)], pancreatic resections [OR 2.27; 95% CI (1.24; 4.18)], estimated blood loss (OR 1.20; 95% CI (1.03; 1.39)], malnutrition [OR 1.77; 95% CI (1.27; 2.45)], and ΔPA [OR 1.59; 95% CI (1.54; 1.65)] were independently associated with postoperative complications in the multivariate analysis. CONCLUSIONS: Patients with preoperative malnutrition were significantly more likely to develop postoperative morbidity. Moreover, a decrease in PA on POD1 was independently associated with a 13% increase in the absolute risk of complications. Whether proactive interventions may reduce the downward shift of PA and the complication rate need further investigation.

Non-anatomical liver resection for hepatocellular carcinoma: the SegSubTe classification to overcome the problem of heterogeneity.

BACKGROUND: The superiority of anatomical resection (AR) vs. non-anatomical resection (NAR) in the surgical management of hepatocellular carcinoma (HCC) is debated. ARs are well-defined procedures, whereas the lack of NAR standardization results in heterogeneous outcomes. This study aimed to introduce the SegSubTe classification for NAR detailing the appropriateness of the level of surgical section of the Glissonean pedicles feeding the tumor. METHODS: A single-center retrospective analysis of pre- and postoperative imaging of consecutive patients treated with NAR for single HCC between 2012 and 2020 was conducted. The quality of surgery was assessed classifying the type of vascular supply and the level of surgical section (segmental, subsegmental or terminal next to the tumor) of vascular pedicles feeding the HCCs; then, the population was divided in "SegSubTe-IN" or "SegSubTe-OUT" groups, and the tumor recurrence and survival were analyzed. RESULTS: Ninety-seven patients who underwent NAR were included; 76% were SegSubTe-IN and 24% were SegSubTe-OUT. Total disease recurrence, local recurrence and cut-edge recurrence in the SegSubTe-IN vs. SegSubTe-OUT groups were 50% vs. 83% (P = 0.006), 20% vs. 52% (P = 0.003) and 16% vs. 39% (P = 0.020), respectively. SegSubTe-OUT odds ratio for local recurrence was 4.1 at univariate regression analysis. One-, three-, and five-year disease-free survival rates in the SegSubTe-IN vs. SegSubTe-OUT groups were 81%, 58% and 35% vs. 46%, 21% and 11%, respectively (P < 0.001). CONCLUSIONS: The SegSubTe classification is a useful tool to stratify and standardize NAR for HCC, aiming at improving long-term oncological outcomes and reducing the heterogeneity of quality of NAR for HCC.

External validation of scores predicting postoperative fistula after pancreatogastrostomy for pancreatoduodenectomy reconstruction. A single center experience.

BACKGROUND: Clinically relevant postoperative pancreatic fistula (CR-POPF) is the most frequent complication of pancreatic surgery and can be fatal. Selection and stratification of patients according to the risk of POPF are important for the perioperative management. Predictive metrics have been developed and validated in pancreatojejunostomy. Aim of this study is to assess whether the most used prognostic scores can be predictive of fistula following Wirsung-pancreaticogastrostomy (WPG) for pancreatoduodenectomy (PD)reconstruction. METHOD: This single-center prospective observational study included 212 PDs between January 2008 and October 2022 with a standardized WPG. All component variables of the six scores were separately validated in our cohort. The overall predictive ability of the six fistula scores was measured and compared with the receiver operating characteristics curves (ROC) method and expressed by the area under the ROC-curve (AUC). Univariate and multivariate logistic regression analyses were performed considering all risk factors in the scores in order to identify variables independently correlated with POPF in the WPG. RESULTS: CR-POPF occurred in 36 of 212 (17 %) patients. All scores showed poor prognostic stratification for the development of CR-POPF. The occurrence of CR-POPF was associated with nine factors: male gender (p = 0.003); BMI (kg/m2) (p = 0.005); ASA (%) (p = 0.003); Soft pancreatic texture (%) (p = 0.003), Pathology (p = 0.008); MPD (p = 0.011); EBL (mL) (p = 0.021); Preop. Bilirubin (mg/dl) (p = 0.038); Preop. Glucose (mg/dl) (p = 0.0369). Male gender (OR: 5.54, CI 1.41-21.3) and soft consistency of the remnant pancreas (OR: 3.83, CI 1.14-12.8) were the only independent prognostic factors on multivariate analysis. CONCLUSIONS: Our study including exclusively pancreatogastrostomies failed to validate the most used predictive scores for POPF. We found that only male gender and soft pancreatic texture are associated with POPF. Specific predictive scores following pancreatogasgtrostomy are needed.

Association of indirect measurement of cell function by bioimpedance analysis with complications in oncologic hepatic surgery.

BACKGROUND: Bioelectric impedance vector analysis (BIVA) is a reliable tool to assess body composition. The aim was to study the association of BIVA-derived phase angle (PA) and standardized PA (SPA) values and the occurrence of surgery-related morbidity. METHODS: Patients undergoing hepatectomy for cancer in two Italian centers were prospectively enrolled. BIVA was performed the morning of surgery. Patients were then stratified for the occurrence or not of postoperative morbidity. RESULTS: Out of 190 enrolled patients, 76 (40%) experienced postoperative complications. Patients with morbidity had a significant lower PA, SPA, body cell mass, and skeletal muscle mass, and higher extracellular water and fat mass. At the multivariate analysis, presence of cirrhosis (OR 7.145, 95% CI:2.712-18.822, p < 0.001), the Charlson comorbidity index (OR 1.236, 95% CI: 1.009-1.515, p = 0.041), the duration of surgery (OR 1.004, 95% CI:1.001-1.008, p = 0.018), blood loss (OR 1.002. 95% CI: 1.001-1.004, p = 0.004), dehydration (OR 10.182, 95% CI: 1.244-83.314, p = 0.030) and SPA < -1.65 (OR 3.954, 95% CI: 1.699-9.202, p = 0.001) were significantly and independently associated with the risk of complications. CONCLUSION: Introducing BIVA before hepatic resections may add valuable and independent information on the risk of morbidity.

Postpancreatectomy Acute Pancreatitis (PPAP): Definition and Grading From the International Study Group for Pancreatic Surgery (ISGPS).

OBJECTIVE: The ISGPS aimed to develop a universally accepted definition for PPAP for standardized reporting and outcome comparison. BACKGROUND: PPAP is an increasingly recognized complication after partial pancreatic resections, but its incidence and clinical impact, and even its existence are variable because an internationally accepted consensus definition and grading system are lacking. METHODS: The ISGPS developed a consensus definition and grading of PPAP with its members after an evidence review and after a series of discussions and multiple revisions from April 2020 to May 2021. RESULTS: We defined PPAP as an acute inflammatory condition of the pancreatic remnant beginning within the first 3 postoperative days after a partial pancreatic resection. The diagnosis requires (1) a sustained postoperative serum hyperamylasemia (POH) greater than the institutional upper limit of normal for at least the first 48 hours postoperatively, (2) associated with clinically relevant features, and (3) radiologic alterations consistent with PPAP. Three different PPAP grades were defined based on the clinical impact: (1) grade postoperative hyperamylasemia, biochemical changes only; (2) grade B, mild or moderate complications; and (3) grade C, severe life-threatening complications. DISCUSSIONS: The present definition and grading scale of PPAP, based on biochemical, radiologic, and clinical criteria, are instrumental for a better understanding of PPAP and the spectrum of postoperative complications related to this emerging entity. The current terminology will serve as a reference point for standard assessment and lend itself to developing specific treatments and prevention strategies.

Skeletal muscle wasting and long-term prognosis in patients undergoing rectal cancer surgery without neoadjuvant therapy.

BACKGROUND: Derangement of body composition has been associated with dismal long-term survival in several gastrointestinal cancers including rectal tumors treated with neoadjuvant therapies. The role of specific preoperative anthropometric indexes on the oncologic outcomes of patients undergoing upfront surgery for rectal cancer has not been investigated. The aim of the study is to evaluate the association of body composition and overall survival in this specific cohort. METHODS: Lumbar computed tomography images, obtained within the 30 days previous to surgery, between January 2009 and December 2016, were used to calculate population-specific thresholds of muscle mass (sarcopenia), subcutaneous and visceral adiposity, visceral obesity, sarcopenic obesity, and myosteatosis. These body composition variables were related with overall survival (OS), tumor-specific survival (TSS), and disease-free survival (DFS). OS, TSS, and DFS were evaluated by the Kaplan-Meier method. Cox regression analysis was used to identify independent predictors of mortality, tumor-specific mortality, and recurrence, and data were presented as hazard ratio (HR) and 95% confidence interval (CI). RESULTS: During the study period, 411 patients underwent rectal resection for cancer, and among these, 129 were without neoadjuvant chemoradiation. The median follow-up was 96.7 months. At the end of the follow-up, 41 patients (31.8%) had died; of these, 26 (20.1%) died for tumor-related reasons, and 36 (27.1%) experienced disease recurrence. One-, three-, and five-year OS was 95.7%, 86.0%, and 76.8% for non-sarcopenic patients versus 82.4%, 58.8%, and 40.0% for sarcopenic ones respectively (p < 0.001). Kaplan-Meier survival curves comparing sarcopenic and non-sarcopenic patients showed a significant difference in terms of OS (log-rank < 0.0001). Through multivariate Cox regression, overall mortality risk was associated only with sarcopenia (HR 1.96; 95%CI 1.03-3.74; p = 0.041). Disease stage IV and III (HR 13.75; 95% CI 2.89-65.6; p < 0.001 and HR 4.72; 95% CI 1.06-21.1; p = 0.043, respectively) and sarcopenia (HR 2.62; 95% CI 1.22-5.6; p = 0.013) were independently associated with TSS. The other body composition indexes investigated showed no significant association with prognosis. CONCLUSIONS: These results support the inclusion of body composition assessment for prognostic stratification of rectal cancer patients undergoing upfront resection.

Prognostic Impact of Preoperative Nutritional Risk in Patients Who Undergo Surgery for Pancreatic Adenocarcinoma.

BACKGROUND: Nutritional derangements are common hallmarks of pancreatic cancer (PC). Their early detection and management are usually overlooked in routine practice. This study aimed to explore preoperative nutritional status and its prognostic value in patients undergoing surgery for PC. METHODS: Data from 73 patients who underwent surgery for PC from November 2015 to January 2018 at the General and Pancreatic Surgery Unit, The Pancreas Institute, University Hospital of Verona Hospital, Verona, Italy, were retrospectively evaluated. The Nutritional Risk Screening (NRS)-2002 was used to evaluate the preoperative nutritional risk. Body composition was assessed using bioimpedance vectorial analysis (BIVA) on the day prior to surgery. The effect of clinical, pathological, and nutritional characteristics on overall survival (OS) was investigated using a Cox and logistic regression model. Kaplan-Meier curves were compared using the log-rank test. RESULTS: Most patients (80.8%) were at preoperative risk of malnutrition (NRS-2002 ≥ 3) despite a mean BMI of 24.1 kg/m2(± 4.3). Twenty-four patients (32.9%) received neoadjuvant therapy prior to surgery. Preoperative NRS-2002 was significantly higher in this subset of patients (p = 0.026), with a significant difference by chemotherapy regimens (in favor of FOLFIRINOX, p = 0.035). In a multivariate analysis, the only independent prognostic factor for OS was the NRS-2002 score (HR 5.24, p = 0.013). Particularly, the likelihood of 2-year survival was higher in NRS < 3 (p = 0.009). CONCLUSIONS: Our analysis confirms that preoperative malnutrition has a detrimental impact on OS in PC patients undergoing radical surgery for PC. Careful preoperative nutritional evaluation of PC patients should be mandatory, especially in those who are candidates for neoadjuvant therapy.

Preoperative carbohydrates: what is new?

PURPOSE OF REVIEW: The aim of this review is to give an overview of recently published articles covering preoperative carbohydrate loading in surgical patients. RECENT FINDINGS: Between January 1, 2017, and December 31, 2019, 26 publications addressing the effect of carbohydrate load were retrieved through a systematic search. Seventeen were randomized clinical trials, three prospective observational studies and six retrospective series with case-control comparison. Most of the studies were underpowered, addressed surrogate endpoints, and variability among dose and timing of carbohydrate (CHO) treatment was high. The most recent literature endorses preoperative carbohydrate loading up to 2 h before operations as a safe treatment. The new evidence confirm that this strategy is effective in reducing perioperative insulin resistance and the proportion of hyperglycemia episodes, and improving patient well-being and comfort but without affecting surgery-related morbidity. SUMMARY: Further properly designed randomized clinical trials, addressing more clinically relevant endpoints such as length of hospitalization and morbidity rate, are warrant.

Preoperative adiposity at bioimpedance vector analysis improves the ability of Fistula Risk Score (FRS) in predicting pancreatic fistula after pancreatoduodenectomy.

BACKGROUND: Anthropometric parameters have been associated with increased risk of clinically relevant postoperative pancreatic fistula (CR-POPF) after pancreaticoduodenectomy (PD). Nonetheless, conventional metrics to predict POPF do not include the assessment of body composition. We aimed to validate the most used Fistula Risk Score (FRS), and to assess whether the appraisal of adipose compartment at bioimpedance vector analysis (BIVA) improves the accuracy of FRS in CR-POPF prediction. METHOD: PD patients from 3 Italian academic institutions were prospectively included over a 2-year period. Patients with ASA score ≥3, heart failure, chronic kidney disease, or compartmentalized fluid collections were excluded. BIVA was performed on the day prior to surgery. CR-POPF occurrence and severity were classified per the ISGPS classification. RESULTS: Out of 148 PDs, 84 patients (56.8%) had pancreatic cancer, and 29 (19.6%) experienced CR-POPF. FRS elements, namely soft pancreatic texture (p = 0.009), small pancreatic duct diameter (p = 0.029), but not blood loss (p = 0.450), as well as high BMI (p = 0.004) were associated with CR-POPF. Also, the preoperative fat mass (FM) amount measured at BIVA was significantly higher in patients who developed CR-POPF, compared to those who did not (median FM = 19.4 kg/m2 vs. 14.4 kg/m2, respectively; p = 0.005). The predictive ability of a multivariate model adding FM to the FRS, assessed at the receiver operating characteristics curve showed a higher accuracy than the FRS alone (AUC = 0.774 and AUC = 0.738, respectively). CONCLUSIONS: Assessment of preoperative FM at BIVA can improve the accuracy of FRS in predicting CR-POPF following pancreatoduodenectomy.

Quasi-elective left colectomy after endoscopic colon stenting for obstructive cancer yields comparable oncologic outcome to full-elective operation.

PURPOSE: Whether deferring surgery after endoscopic self-expandable metal stent (SEMS) placement for neoplastic stricture, and operating patients in a quasi-elective situation, may result in similar oncologic outcomes to elective operations is unclear. This study aimed to evaluate the disease-free survival (DFS) rates of patients who underwent an interval colon resection after SEMS placement or an elective operation with comparable cancer stages. METHODS: From a prospective dataset, we retrospectively selected patients with the following characteristics: (1) left-sided colon cancer and (2) cancer stage I to III. Exclusion criteria were as follows: (1) palliative surgery and (2) emergency operation. Then we stratified patients into two groups: (A) full-elective left colon resection and (B) quasi-elective left colon resection, defined as surgery performed after SEMS placement for obstructive colon cancer. DFS function was studied by the Kaplan-Meier method. RESULTS: After 1:2 matching based on cancer stage, 106 patients of the group A were compared with 53 patients of group B. In each group, there were 9.4% of stage I, 39.4% of stage II, and 50.9% of stage III patients. The rate of technical failure in SEMS placement was 3.8%. After a mean follow-up of 54 months, 16 (15.1%) patients in the full-elective groups and 10 (18.9%) in the quasi-elective group experience cancer recurrence (log rank = 0.588). DFS curve did not reach the median value. CONCLUSIONS: SEMS placement with interval colon resection for obstructive neoplastic strictures seems to provide similar long-term oncologic outcomes to operations performed in an elective setting when a low rate of technical failure is achieved.

Treatment of hepatocellular carcinoma beyond the Milan criteria. A weighted comparative study of surgical resection versus chemoembolization.

BACKGROUND: Optimal treatment of hepatocellular carcinoma (HCC) beyond the Milan criteria (MC) is debated. The aim of the study was to assess overall-survival (OS) and disease-free-survival (DFS) for HCC beyond MC when treated by trans-arterial-chemoembolization (TACE) or surgical resection (SR). METHOD: between 2005 and 2015, all patients with a first diagnosis of HCC beyond MC(1 nodule>5 cm, or 3 nodules>3 cm without macrovascular invasion) were evaluated. Analyses were carried out through Kaplan-Meier, Cox models and the inverse probability weighting (IPW) method to reduce allocation bias. Sub-analyses have been performed for multinodular and single large tumors compared with a MC-IN cohort. RESULTS: 226 consecutive patients were evaluated: 118 in SR group and 108 in TACE group. After IPW, the two pseudo-populations were comparable for tumor burden and liver function. In the SR group, 1-5 years OS rates were 72.3% and 35% respectively and 92.7% and 39.3% for TACE (p = 0.500). The median DFS was 8 months (95%CI:8-9) for TACE, and 11 months (95%CI:9-12) for SR (p < 0.001). TACE was an independent predictor for recurrence (HR 1.5; 95%CI: 1.1-2.1; p = 0.015). Solitary tumors > 5 cm and multinodular disease had comparable OS and DFS as Milan-IN group (p > 0.05). CONCLUSION: Surgery allowed a better control than TACE in patient bearing HCC beyond MC. This translated into a significant benefit in terms of DFS but not OS.

Perioperative Interstitial Fluid Expansion Predicts Major Morbidity Following Pancreatic Surgery: Appraisal by Bioimpedance Vector Analysis.

OBJECTIVE: To evaluate whether perioperative bioimpedance vector analysis (BIVA) predicts the occurrence of surgery-related morbidity. SUMMARY BACKGROUND DATA: BIVA is a reliable tool to assess hydration status and compartimentalized fluid distribution. METHODS: The BIVA of patients undergoing resection for pancreatic malignancies was prospectively measured on the day prior to surgery and on postoperative day (POD)1. Postoperative morbidity was scored per the Clavien-Dindo classification (CDC), and the Comprehensive Complication Index (CCI). RESULTS: Out of 249 patients, the overall and major complication rates were 61% and 16.5% respectively. The median CCI was 24 (IQR 0.0-24.2), and 24 patients (9.6%) had a complication burden with CCI≥40. At baseline the impedance vectors of severe complicated patients were shorter compared to the vectors of uncomplicated patients only for the female subgroup (P=0.016). The preoperative extracellular water (ECW) was significantly higher in patients who experienced severe morbidity according to the CDC or not [19.4L (17.5-22.0) vs. 18.2L (15.6-20.6), P=0.009, respectively] and CCI≥40, or not [20.3L (18.5-22.7) vs. 18.3L (15.6-20.6), P=0.002, respectively]. The hydration index on POD1 was significantly higher in patients who experienced major complications than in uncomplicated patients (P=0.020 and P=0.025 for CDC and CCI, respectively).At a linear regression model, age (ß=0.14, P=0.035), sex female (ß=0.40, P<0.001), BMI (ß=0.30, P<0.001), and malnutrition (ß=0.14, P=0.037) were independent predictors of postoperative ECW. CONCLUSION: The amount of extracellular fluid accumulation predicts major morbidity after pancreatic surgery. Female, obese and malnourished patients were at high risk of extracellular fluid accumulation.

The impact of age and ageing on hepatocarcinoma surgery: Short- and long-term outcomes in a multicentre propensity-matched cohort.

BACKGROUND: Management of malignancy in elderly patients is challenging. We aimed to assess the impact of age and ageing on overall survival (OS), recurrence-free survival (RFS), tumour-specific survival (TSS) and potential years of life lost (PYLL) after surgery for hepatocarcinoma (HCC). METHODS: Consecutive patients treated for HCC between 2005 and 2015 were evaluated. Patients were divided according to age-decade. Afterwards, elderly patients (≥75 years) were compared with patients < 75 years. A 1:1 propensity matching was used to reduce the risk of bias. Survival was estimated by Kaplan-Meier method and Cox regression analysis. RESULTS: Four hundred and thirty-nine patients were stratified: group 1 (age ≤ 55, n = 72), group 2 (age: 56-65, n = 133), group 3 (age: 66-74, n = 141) and group 4 (age ≥ 75, n = 93). Group 1 had the highest median PYLL (27.6, IQR 24.6-32.5) while group 4 the lowest (2.0, IQR 0-9.6; P < 0.001). Comparing elderly vs younger, there were no significant differences in terms of OS (P = 0.054), TSS (P = 0.321) and RFS (P = 0.240). Ageing was the only variable associated with post-operative complications (OR: 2.51; 95% CI: 1.23-5.13; P = 0.025) and liver-related morbidity was an independent predictor of OS. (HR 2.49, 95% CI: 1.34-4.64, P = 0.004). CONCLUSION: Ageing per se is not an absolute contraindication for liver resection, given the acceptable oncologic long-term prognosis, but the worse short-term outcomes in the elderly should induce an accurate patient selection.

Association Between Compliance to an Enhanced Recovery Protocol and Outcome After Elective Surgery for Gastric Cancer. Results from a Western Population-Based Prospective Multicenter Study.

BACKGROUND: The association between compliance to an enhanced recovery protocol (ERAS) and outcome after surgery for gastric cancer has been poorly investigated, particularly in Western patients. The aim of the study was to evaluate whether the rate of adherence to the ERAS program was correlated with outcome and time of discharge. METHODS: A prospective, observational, multicenter study was designed to be performed at Italian referral centers for gastric surgery. The protocol was discussed and approved by the Italian Research Group on Gastric Cancer. Twenty-three ERAS domains were applied. A multivariate logistic regression was used to assess the association between ERAS compliance and overall and major complication rates. The Poisson regression model (measured as mean ratios) was used to assess the association of ERAS compliance rate and length of stay (LOS). RESULTS: Eight centers participated and 290 subjects with a median age of 73 years were enrolled. The overall rates of adherence to pre-, intra-, and postoperative ERAS items were 69.8%, 60.3%, and 82.5%, respectively. At the multivariate model, there was an association between overall rate of morbidity and an overall ERAS compliance rate greater than 70% (OR 0.413; 95% CI 0.235-0.7240; P 0.002). A similar association was found for major complications (OR 0.328; 95% CI 0.151-0.709; P 0.005). The Poisson regression showed that in patients with ERAS compliance rate >70%, LOS was reduced of approximately 20% (mean ratio 0.812; 95% CI 0.694-0.950; P 0.009). CONCLUSIONS: These results suggest a moderate compliance to an ERAS program and a significant association between adherence and outcomes.

External Validation of Different Scoring Systems for Suspected Choledocholithiasis.

AIM OF THE STUDY: The diagnosis of choledocholithiasis is challenging. Previously published scoring systems designed to calculate the risk of choledocholithiasis were evaluated to appraise the diagnostic performance. PATIENTS AND METHODS: Data of patients who were admitted between 2013 and 2015 with the following characteristics were retrieved: bile stone-related symptoms and signs, and indication to laparoscopic cholecystectomy. To validate and appraise the performance of the 6 scoring systems, the acknowledged domains of each metrics were applied to the present cohort. Sensitivity, specificity, positive, negative predictive, Youden index, and receiver operating characteristic curve with the area under the curve (AUC) values of the scores were calculated. RESULTS: Two-hundred patients were analyzed. The highest sensitivity and specificity were obtained from the Menezes' (96.6%) and Telem's (99.3%) metrics respectively. The Telem's and Menezes' scores had the best positive (75.0%) and negative (96.4%) predictive values respectively. The best accuracy, as computed by the Youden index and AUC, was found for the Soltan's scoring system (0.628 and 0.88, respectively). CONCLUSION: The available scoring systems are precise only in identifying patients with a negligible risk of common bile duct stone, but overall insufficiently accurate to suggest the routine use in clinical practice.

Preoperative Oral Carbohydrate Load Versus Placebo in Major Elective Abdominal Surgery (PROCY): A Randomized, Placebo-controlled, Multicenter, Phase III Trial.

OBJECTIVE: To explore whether preoperative oral carbohydrate (CHO) loading could achieve a reduction in the occurrence of postoperative infections. BACKGROUND: Hyperglycemia may increase the risk of infection. Preoperative CHO loading can achieve postoperative glycemic control. METHODS: This was a randomized, controlled, multicenter, open-label trial. Nondiabetic adult patients who were candidates for elective major abdominal operation were randomized (1:1) to a CHO (preoperative oral intake of 800 mL of water containing 100 g of CHO) or placebo group (intake of 800 mL of water). The blood glucose level was measured every 4 hours for 4 days. Insulin was administered when the blood glucose level was >180 mg/dL. The primary endpoint was the occurrence of postoperative infection. The secondary endpoint was the number of patients needing insulin. RESULTS: From January 2011 through December 2015, 880 patients were randomly allocated to the CHO (n = 438) or placebo (n = 442) group. From each group, 331 patients were available for the analysis. Postoperative infection occurred in 16.3% (54/331) of CHO group patients and 16.0% (53/331) of placebo group patients (relative risk 1.019, 95% confidence interval 0.720-1.442, P = 1.00). Insulin was needed in 8 (2.4%) CHO group patients and 53 (16.0%) placebo group patients (relative risk 0.15, 95% confidence interval 0.07-0.31, P < 0.001). CONCLUSIONS: Oral preoperative CHO load is effective for avoiding a blood glucose level >180 mg/dL, but without affecting the risk of postoperative infectious complication.

Preoperative Biliary Stenting and Major Morbidity After Pancreatoduodenectomy: Does Elapsed Time Matter?: The FRAGERITA Study Group.

OBJECTIVE: To analyze possible associations between the duration of stent placement before surgery and the occurrence and severity of postoperative complications after pancreatoduodenectomy (PD). BACKGROUND: The effect of preoperative stent duration on postoperative outcomes after PD has not been investigated. METHODS: From 2013 to 2016, patients who underwent PD for any reasons after biliary stent placement at 5 European academic centers were analyzed from prospectively maintained databases. The primary aim was to investigate the association between the duration of preoperative biliary stenting and postoperative morbidity. Patients were stratified by stent duration into 3 groups: short (<4 weeks), intermediate (4-8 weeks), and long (≥8 weeks). RESULTS: In all, 312 patients were analyzed. The median time from stent placement to surgery was 37 days (2-559 days), and most operations were performed for pancreatic cancer (67.6%). Morbidity and mortality rates were 56.0% and 2.6%, respectively. Patients in the short group (n = 106) experienced a higher rate of major morbidity (43.4% vs 20.0% vs 24.2%; P < 0.001), biliary fistulae (13.2% vs 4.3% vs 5.5%; P = 0.031), and length of hospital stay [16 (10-52) days vs 12 (8-35) days vs 12 (8-43) days; P = 0.025]. A multivariate adjusted model identified the short stent duration as an independent risk factor for major complications (odds ratio 2.64, 95% confidence interval 1.23-5.67, P = 0.013). CONCLUSIONS: When jaundice treatment cannot be avoided, delaying surgery up to 1 month after biliary stenting may reduce major morbidity, procedure-related complications, and length of hospital stay.

Impact of Sarcopenic Obesity on Failure to Rescue from Major Complications Following Pancreaticoduodenectomy for Cancer: Results from a Multicenter Study.

BACKGROUND: Failure to rescue (FTR) is a quality-of-care indicator in pancreatic surgery, but may also identify patients who may not tolerate major postoperative complications despite being treated with best available care. Previous studies found that high visceral adipose tissue-to-skeletal muscle ratio is associated with poor outcomes following pancreaticoduodenectomy (PD). The aim of the study is to assess the impact of sarcopenic obesity on occurrence of FTR from major complications in cancer patients undergoing PD. METHODS: Prospectively collected data from three high-volume hospitals were reviewed. Total abdominal muscle area (TAMA) and visceral fat area (VFA) were assessed at preoperative staging computed tomography scan. Sarcopenic obesity was defined as high VFA/TAMA ratio. FTR was defined as postoperative mortality following major complication. RESULTS: 120 patients with major complications were included. FTR occurred in 23 (19.2%) patients. The "seminal" complications leading to FTR were pancreatic or biliary fistula-related sepsis (n = 14), postoperative pancreatic fistula (POPF)-related hemorrhage (n = 5), and duodenojejunal anastomosis leak-related sepsis (n = 1). On univariate analysis, older age [odds ratio (OR) 3.5, p = 0.034], American Society of Anesthesiologists (ASA) score 3+ (OR 4.2, p = 0.005), cardiovascular disease (OR 3.3, p = 0.013), low serum albumin (OR 2.6, p = 0.042), sarcopenic obesity (OR 4.2, p = 0.009), POPF (OR 3.1, p = 0.027), and cardiorespiratory complications (OR 3.7, p = 0.011) were significantly associated with FTR. On multivariate analysis, sarcopenic obesity [OR 5.7, 95% confidence interval (CI) 1.6-20.7, p = 0.008], ASA score 3+ (OR 4.1, 95% CI 1.2-14.3, p = 0.025), and pancreatic fistula (OR 3.2, 95% CI 1.0-10.2, p = 0.045) were independently associated with FTR. CONCLUSION: Sarcopenic obesity, low preoperative physical status, and occurrence of pancreatic fistula are associated with significantly higher risk of FTR from major complications after PD.

Recurrence Patterns After Anatomic or Parenchyma-Sparing Liver Resection for Hepatocarcinoma in a Western Population of Cirrhotic Patients.

BACKGROUND: The optimal surgical strategy to lessen the risk of hepatocarcinoma (HCC) recurrence is debated. This study aimed to investigate the role of anatomic resection (AR) and parenchyma-sparing resection (PSR) in HCC recurrence patterns. METHODS: The study analyzed 384 cirrhotic patients with a first diagnosis of HCC. Of these patients, 142 underwent AR, and 242 underwent PSR. The two groups were unbalanced at the univariate analysis. To minimize this bias, a 1:1 propensity score-matching analysis (PSA) was used. Disease-free survival (DFS) curves were analyzed by the Kaplan-Maier method. RESULTS: The PSA allowed pairing of 200 patients (100 for AR and 100 for PSR). In this study, 59 patients (62.8%) had recurrence after AR compared with 58 patients (63.7%) after PSR (p = 0.891). The rates of local recurrence were respectively 15.3% and 15.5% (p = 0.968). When microvascular invasion was considered, the median DFS was 10.7 months for AR and 9.4 months for PSR (p = 0.607). In comparisons of AR and PSR, DFS did not differ significantly between subgroups with high histologic grading (p = 0.520), multiple nodules (p = 0.307), and Child-Pugh B (p = 0.679). CONCLUSION: Excision of the anatomic segment did not seem to reduce the rate of relapse or recurrence patterns significantly, even in high-risk subgroups.