Randomized controlled trial of olanexidine gluconate and povidone iodine for surgical site infection after gastrointestinal surgery.

Aim: Antiseptics used at surgical sites are vital to preventing surgical site infections (SSI). In this study, a comparative investigation of the novel antiseptics olanexidine gluconate (OG) and povidone-iodine (PI) was conducted to determine whether OG is more effective than PI against SSI after gastrointestinal surgery. Methods: This prospective, randomized, single-blind, interventional, single-center study was conducted between August 2018 and February 2021. Patients scheduled for large-scale gastrointestinal surgeries were randomized into two groups and administered OG (OG group) or PI (PI group) as preoperative antiseptics. The primary endpoint was the SSI occurrence rate within 30 days after surgery. Results: In total, 525 patients were enrolled in this study, of whom 256 and 254 were in the OG and PI groups, respectively. The total SSI occurrence rate in the OG group (10.8%; n = 26) and the PI group (13.0%; n = 33) was not significantly different (p = 0.335). The occurrence rate of superficial incisional SSI and organ/space SSI did not significantly differ between the groups; however, that of deep incisional SSI showed a significant difference, with 0.4% (n = 1) in the OG group and 4.3% (n = 11) in the PI group (p = 0.003). Conclusion: OG, as a preoperative skin antiseptic, did not reduce the occurrence rate of total SSI. However, deep incisional SSI may be reduced using OG.

Laparoscopic and open minor liver resection for hepatocellular carcinoma with clinically significant portal hypertension: a multicenter study using inverse probability weighting approach.

BACKGROUND: Liver resection offers substantial advantages over open liver resection (OLR) for patients with hepatocellular carcinoma (HCC) in terms of reduced intraoperative blood loss and morbidity. However, there is limited evidence comparing the indications and perioperative outcomes with the open versus laparoscopic approach for resection. This study aimed to compare postoperative outcomes between patients undergoing laparoscopic liver resection (LLR) and OLR for HCC with clinically significant portal hypertension (CSPH). METHODS: A total of 316 HCC patients with CSPH (the presence of gastroesophageal varices or platelet count < 100,000/ml and spleen diameter > 12 cm) undergoing minor liver resection at eight centers were included in this study. To adjust for confounding factors between the LLR and OLR groups, an inverse probability weighting method analysis was performed. RESULTS: Overall, 193 patients underwent LLR and 123 underwent OLR. After weighting, LLR was associated with a lower volume of intraoperative blood loss and the incidence of postoperative complications (including pulmonary complications, incisional surgical site infection, and paralytic ileus) compared to the OLR group. The 3-, 5-, and 7-year postoperative recurrence-free survival rates were 39%, 26%, and 22% in the LLR group and 49%, 18%, and 18% in the OLR group, respectively (p = 0.18). And, the 3-, 5-, and 7-year postoperative overall survival rates were 71%, 56%, and 44% in the LLR group and 76%, 51%, 44% in the OLR group, respectively (p = 0.87). CONCLUSIONS: LLR for HCC patients with CSPH is clinically advantageous by lowering the volume of intraoperative blood loss and incidence of postoperative complications, thereby offering feasible long-term survival.

Postoperative computed tomography findings predict re-drainage cases after early drain removal in pancreaticoduodenectomy.

PURPOSE: This study aimed to investigate the risk factors for re-drainage in patients with early drain removal after pancreaticoduodenectomy (PD). METHODS: This study retrospectively analyzed 114 patients who underwent PD and prophylactic drain removal on postoperative day (POD) 4 between January 2012 and March 2021. We analyzed the risk factors for re-drainage according to various factors. Peri-pancreaticojejunostomic fluid collection (PFC) index and pancreatic cross-sectional area (CSA) were evaluated using computed tomography on POD 4. The PFC index was calculated by multiplying the length, width, and height at the maximum aspect. RESULTS: Among the 114 patients, 15 (13%) underwent re-drainage due to postoperative pancreatic fistula. Multivariate analysis identified a PFC index ≥ 8.16 cm3 on POD 4 (odds ratio [OR], 20.40, 95%CI 2.38-174.00; p = 0.006) and pancreatic CSA on POD 4 ≥ 3.65 cm2 (OR, 16.40, 95%CI 1.57-171.00; p = 0.020) as independent risk factors for re-drainage. CONCLUSION: A careful decision might be necessary for early drain removal in patients with a PFC index ≥ 8.16 cm3 and pancreatic CSA ≥ 3.65 cm2.

Effect of early administration of tolvaptan on pleural effusion post-hepatectomy.

PURPOSE: This study evaluated the efficacy of tolvaptan administration at the early stage after hepatectomy to control pleural effusion and improve the postoperative course. METHODS: Patients were administered tolvaptan (7.5 mg) and spironolactone (25 mg) from postoperative day 1 to postoperative day 5 (tolvaptan group, n = 68) for 13 months. Early administration of tolvaptan was not provided in the control group (n = 68); however, diuretics were appropriately administered according to the patient's condition. The amount of pleural effusion on computed tomography on postoperative day 5 was compared between the two groups. RESULTS: The amount of pleural effusion and increase in body weight on postoperative day 5 showed significant differences in both groups (p < 0.001 and p = 0.019, respectively). However, the rate of pleural aspiration and the duration of postoperative hospitalization were comparable between the groups. The amount of intraoperative blood loss and lack of early administration of tolvaptan were identified as independent risk factors contributing to pleural effusion on multivariate analysis. CONCLUSION: Early administration of tolvaptan to patients after hepatectomy was found to be capable of controlling postoperative pleural effusion and increase in body weight, but it did not reduce the rate of pleural aspiration or the hospitalization period.

Response Prediction Model of Atezolizumab plus Bevacizumab in Patients with Unresectable Hepatocellular Carcinoma: Multicenter Retrospective Study.

INTRODUCTION: Atezolizumab plus bevacizumab (ATZ+BV) treatment has become the first-line regimen for unresectable hepatocellular carcinoma (u-HCC). Prediction of response to it might be clinically beneficial. Using peripheral blood parameters, we aimed to construct a prediction model for ATZ+BV treatment. METHODS: Clinical records of 119 patients with u-HCC treated by ATZ+BV were retrospectively analyzed. The primary outcome measurement was defined as any-size reduction at the initial image evaluation. Using baseline values of peripheral blood parameters, a prediction model was constructed by univariate and multivariate logistic regression analysis. Validation was performed internally by bootstrap method. RESULTS: The primary outcome was achieved in 46 patients. Univariate analysis showed that C-reactive protein (CRP), alpha-fetoprotein (AFP), des-gamma-carboxy prothrombin (DCP), neutrophil-to-lymphocyte ratio (NLR), and platelet-to-lymphocyte ratio (PLR) were possible predictors. CRP and DCP, and NLR and PLR had correlation (correlation coefficient >0.3), so we used CRP and NLR as representative factors, respectively. Multivariate analysis constructed the following prediction model: Logit = 1.62-0.61×[CRP] -0.38×[Log10AFP] -0.37×[NLR]. Bootstrapped median (95% confidence interval) of coefficients of CRP, Log10AFP, NLR were -0.64 (-1.46 ∼ -0.11), -0.40 (-0.82 ∼ -0.03), and -0.38 (-0.74 ∼ -0.05), respectively. The area under the receiver operating characteristic curve (95% confidence interval) was 0.73 (0.60-0.80). Median overall survival of the favorably and unfavorably predicted groups were 17.0 and 11.0 months (p = 0.03), respectively. DISCUSSION: In patients with u-HCC treated by ATZ+BEV, a prediction model constructed using baseline values of CRP, AFP, and NLR had impact on any-size reduction at the initial image evaluation and on prognosis.

Effect of laparoscopic liver resection on postoperative delirium in elderly patients with hepatocellular carcinoma.

BACKGROUND: Delirium is a multifactorial and heterogeneous syndrome that is defined as acutely altered consciousness. This retrospective multicenter study evaluated the impact of postoperative delirium after liver resection for hepatocellular carcinoma (HCC) in elderly patients. METHODS: Patients aged ≥75 years, who underwent curative liver resection for HCC at nine university hospitals from April 2010 to December 2017, were evaluated to compare short- and long-term outcomes between patients with and without delirium. Risk factors for delirium were determined using multivariate regression analysis. RESULTS: The rate of postoperative delirium was 14.2% (n = 80) in the study cohort of 562 patients. Multivariate analysis revealed smoking history, hypertension, sleeping pill consumption, and open liver resection as risk factors for postoperative delirium. The rate of other causes of death was significantly higher in the delirium group than in the no-delirium group although the rate of death at 1 year due to HCC or liver failure was similar between the two groups (p = .015). The 1-year mortality rates due to vascular diseases were 71.4% and 15.4% in the delirium and no-delirium groups, respectively (p = .022). The 1-, 3-, and 5-year survival rates after liver resection were 86.6%, 64.1%, and 36.5% in the delirium group and 91.3%, 71.2%, and 56.9% in the no-delirium group, respectively (p = .046). CONCLUSION: The multivariate analysis revealed the possible benefits of laparoscopic liver resection in reducing the rate of postoperative delirium after liver resection for HCC in elderly patients.

Colonization of the gastric juice by Candida spp. promotes surgical site infection after hepatectomy.

PURPOSE: Candida spp. cause opportunistic infections in conditions of immunodeficiency. Here, we investigated the relationship between colonization of the gastric juice by Candida spp. and surgical site infection (SSI) in hepatectomy. METHODS: Consecutive hepatectomy cases between November 2019 and April 2021 were enrolled. Gastric juice samples (collected intraoperatively through a nasogastric tube) were cultured. We compared factors related to patient background, blood test findings, surgical findings, and postoperative complications between the Candida + group (positive for colonization of the gastric juice by Candida spp.) and the Candida - group (negative). In addition, we identified the factors that contribute to SSI. RESULTS: There were 29 and 71 patients in the Candida + and Candida - groups, respectively. The Candida + group was significantly older (average age: Candida + 74 years vs. Candida - 69 years; p = 0.02) and contained more patients negative for the hepatitis B and C virus (Candida + 93% vs. Candida - 69%; p = 0.02). SSI was significantly more common in the Candida + group (Candida + 31% vs. Candida - 9%; p = 0.01). Postoperative bile leakage and colonization of the gastric juice by Candida spp. were independent predictors of SSI. CONCLUSION: Colonization of the gastric juice by Candida spp. is a risk factor for SSI after hepatectomy.

Clinical impact of postoperative malnutrition after pancreaticoduodenectomy: prediction based on estimated functional remnant pancreatic volume, prognostic nutritional index, and body mass index.

BACKGROUND: The present study aimed to evaluate the association between estimated functional remnant pancreatic volume (eFRPV) and postoperative malnutrition after pancreaticoduodenectomy (PD). METHODS: The medical records of 131 patients who underwent PD and preoperative computed tomography were retrospectively reviewed. Onodera's prognostic nutritional index (PNI) was assessed 6-months after PD. Patients with PNI values of at least 45 were included in the non-malnutrition group, while those with values <45 and <40 were included in the mild and severe malnutrition groups, respectively. Associations between eFRPV and postoperative nutritional status were evaluated to identify factors predictive of severe malnutrition after PD. RESULTS: Fifty-three patients (40%) were included in the non-malnutrition group, while 38 (29%) and 40 (31%) were included in the mild and severe malnutrition groups, respectively. Overall survival was significantly shorter in the severe malnutrition group (p < 0.001). The eFRPV was significantly lower in the severe malnutrition group (p = 0.003; Jonckheere-Terpstra trend test, p < 0.001). In the multivariate analysis, eFRPV ≤55.2 mL·HU (odds ratio [OR] = 5.20; p = 0.004), preoperative PNI ≤41.9 (OR = 6.37; p = 0.010), and body mass index ≤19.1 kg/m2 (OR = 3.43; p = 0.031) were independent predictors of severe malnutrition after PD. CONCLUSION: The current results indicate that eFRPV may predict low PNI values after PD.

[A Case of Laparoscopic Abdominoperineal Resection with TpTME for Adenocarcinoma of Anal Canal with Pagetoid Spread].

A man in his 80s was referred to our hospital with the chief complaint of perianal erosion. Colonoscopy revealed a peripheral flat lesion in the anal canal. Since immunohistological examination showed positive for CK20 and negative for GCDFP15, we made a preoperative diagnosis of anal canal cancer with Pagetoid spread. It was diagnosed as cT1bN0M0, cStage Ⅰ by TNM classification, and laparoscopic abdominoperineal resection with TpTME was performed. Negative biopsy of the perianal skin was confirmed both preoperation and during the operation. The postoperative course was uneventful, and no urinary dysfunction was observed. The patient was discharged 15 days after the operation. The histopathological diagnosis was negative margin. The patient is alive without recurrence 1 year after the operation. Adenocarcinoma of anal canal with Pagetoid spread is rare, and differentiation from Paget's disease is important for determining treatment policy. By conducting a detailed examination of the extent of tumor progression and using TpTME together, it was possible to perform surgery that both secured the CRM and preserved urinary function.

The Prognostic Value of Preoperative Serum Markers and Risk Classification in Patients with Hepatocellular Carcinoma.

BACKGROUND: Complex hepatocellular carcinoma (HCC) prognostic biomarkers have been reported in various studies. We aimed to establish biomarkers that could predict prognosis, and formulate a simple classification using non-invasive preoperative blood test data. METHODS: We retrospectively identified 305 patients for a discovery cohort who had undergone HCC-related hepatectomy at four Japanese university hospitals between January 1, 2011 and December 31, 2013. Preoperative blood test parameter optimal cut-off values were determined using receiver operating characteristic curve analysis. Cox uni- and multivariate analyses were used to determine independent prognostic factors. Risk classifications were established using classification and regression tree (CART) analysis. Validation was performed with 267 patients from three other hospitals. RESULTS: In multivariate analysis, α-fetoprotein (AFP, p < 0.001), protein induced by vitamin K absence or antagonist-II (PIVKA-II, p = 0.006), and C-reactive protein (CRP, p < 0.001) were independent prognostic factors for overall survival (OS). AFP (p = 0.007), total bilirubin (p = 0.001), and CRP (p = 0.003) were independent recurrent risk factors for recurrence-free survival (RFS). CART analysis results formed OS (CRP, AFP, and albumin) and RFS (PIVKA-II, CRP, and total bilirubin) decision trees, based on machine learning using preoperative serum markers, with three risk classifications. Five-year OS (low risk, 80.0%; moderate risk, 56.3%; high risk, 25.2%; p < 0.001) and RFS (low risk, 43.4%; moderate risk, 30.8%; high risk, 16.6%; p < 0.001) risks differed significantly. These classifications also stratified OS and RFS risk in the validation cohort. CONCLUSION: Three simple risk classifications using preoperative non-invasive prognostic factors could predict prognosis.

Tumor budding may be a promising prognostic indicator in intrahepatic cholangiocarcinoma: A multicenter retrospective study.

Purpose: This retrospective study evaluated our hypothesis that high tumor budding (≥10 buds) may help determine the appropriate T category for more accurate staging of intrahepatic cholangiocarcinoma (ICC). Methods: We analyzed the clinical and histopathologic data of 235 consecutive patients with histologically confirmed ICC following hepatectomy at five university hospitals in the Kansai region of Japan between January 2009 and December 2020. ICC staging was based on the Liver Cancer Study Group of Japan (LCSGJ) staging system, 6th edition. Results: Patients with ICC with high budding showed significantly shorter disease-specific survival (DSS) and disease-free survival (DFS) than patients with low/intermediate budding. Cox proportional hazards regression analysis showed a hazard ratio of 2.2-2.3 (P < 0.05) for high budding. Based on these results, we modified the T category of ICC in the LCSGJ staging system by adding severity of tumor budding as a fourth determinant. This proposed staging system for ICC has significantly improved the prognostic accuracy for both DSS and DFS (both: P < 0.05). Conclusions: High tumor budding is a new candidate for an additional determinant of the T category in staging ICC. An LCSGJ staging system containing an additional evaluation of tumor budding may lead to improved staging accuracy.

Clinical effect of home enteral tube feeding supplementation on nutritional status after esophagectomy with retrosternal gastric tube reconstruction.

Body weight loss and poor nutritional status are frequently observed after esophageal cancer surgery. The aim of this study was to pilot an investigation on the impact of home enteral tube feeding supplementation (HES) for up to 3 months after esophageal cancer surgery. We retrospectively reviewed consecutive 67 esophageal cancer patients who underwent esophagectomy with gastric tube reconstruction. We started HES from April 2017. The patients were divided into 2 groups. Among 67 patients, 40 patients underwent HES between April 2017 and November 2020 (HES group). Other 27 patients who underwent esophagectomy between January 2012 and March 2017 were not administered HES (C group). Thereafter, multiple factors concerning patient nutritional status at long-term follow-up were evaluated. The baseline characteristics were balanced between the two groups. There were no significant differences in nutritional status scores before esophagectomy. The percentage weight loss was less in the HES group compared with the C group both at 3 months and 1 year after surgery: 7.3% (-7.6 to 15.2), 7.7% (-4 to 13.9) in the HES group and 10.6% (-3.6 to 29.1), 10.8% (-5.8 to 20.0) in C group (P < 0.05, P < 0.05). In the patients with anastomotic stenosis, the percentage weight loss was less in the HES group compared with the C group: 7.2% (2.0-14.9) and 14.6% (6.2-29.1), P < 0.05. HES may improve early weight loss in postesophagectomy patients.

Short- and long-term outcomes of laparoscopic versus open repeat liver resection for hepatocellular carcinoma: A multicenter study.

OBJECTIVE: This multicenter study aimed to compare the short- and long-term outcomes of laparoscopic (LRLR) versus open repeat liver resection (ORLR) for recurrent hepatocellular carcinoma (HCC) using propensity score matching (PSM). Despite the expanding indications for laparoscopic liver resection, limited data regarding the outcomes of LRLR have previously been reported. METHODS: This study included patients who underwent repeat liver resection for recurrent HCC. Patients were divided into the LRLR and ORLR groups, and their short- and long-term outcomes were compared via PSM. RESULTS: There were 256 and 130 patients in the ORLR and LRLR groups, respectively. After PSM, 64 patients were included in each group. Intraoperative blood loss was significantly less in LRLR than in ORLR (56 vs 208 ml, P < .001). Postoperative complications of Clavien-Dindo IIIa or more were significantly less in LRLR than in ORLR (3.1% vs 15.6%, P = .030). The length of hospital stay was notably shorter in LRLR than in ORLR (9 vs 12 days, P < .001). Survival rates after repeat liver resection at 1, 3, and 5 years, respectively, were comparable at 93.4%, 81.9%, and 63.5% for ORLR and at 94.8%, 80.7%, and 67.3% for LRLR (P = .623). Subgroup analysis of patients who underwent wedge resection in repeat liver resection revealed that the postoperative complication rate was notably lower in LRLR than in ORLR (7.2% vs 21.8%, P = .030). CONCLUSION: LRLR for recurrent HCC is a viable option due to its better short-term outcomes and comparable long-term outcomes compared to ORLR.

Preoperative Physical Activity Level Measurement by Accelerometer for Predicting Post-Hepatectomy Complications: A Prospective Observational Study.

INTRODUCTION: Recently, accelerometers have received much attention around the world. This study examined whether the preoperative physical activity level measured by an accelerometer could be a useful predictor of post-hepatectomy complications. METHODS: Between December 2016 and December 2020, the physical activity levels of 185 patients were measured using an accelerometer 3 days before hepatectomy and from postoperative day 1 to 7. The patients without postoperative complications (n = 153) and those with postoperative complications (n = 32) were compared using either the χ2 test or Fisher's exact test for nominal variables; continuous variables were analyzed using either Student's t test or Mann-Whitney U test. Differences were considered statistically significant when the p value was <0.05. Risk factors for postoperative complications following hepatectomy were also investigated. RESULTS: The number of patients with an anatomical resection was significantly higher in patients with postoperative complications (p = 0.001). Furthermore, laparoscopic hepatectomy was performed in 65.4% of patients without postoperative complications and in 25.0% of those with postoperative complications; the difference was statistically significant (p < 0.001). The average preoperative physical activity level was 150.6 kcal/day in patients without postoperative complications and 84.5 kcal/day in those with postoperative complications (p = 0.001). Multivariate analysis identified blood loss, operative time, and preoperative physical activity level as independent risk factors for postoperative complications. DISCUSSION/CONCLUSION: Patients with lower preoperative physical activity levels are at a high risk of developing postoperative complications after hepatectomy. Hence, preoperative physical activity level measurement may be useful in predicting post-hepatectomy complications.

Effect of the Gastrojejunostomy Position on the Postoperative Amount of Oral Intake in Pancreaticoduodenectomy.

INTRODUCTION: We investigated the effect of the gastrojejunostomy position on the postoperative oral intake in patients who have undergone pancreaticoduodenectomy (PD). METHODS: We investigated 119 patients who underwent PD between June 2013 and December 2019 and examined the effect of the horizontal and vertical distance rates of the gastrojejunostomy position on the postoperative oral intake. The patients were categorized as having poor or good oral intake based on whether their intake was up to half the required calorie intake. RESULTS: There were significant differences in the number of cases with grade B or C postoperative pancreatic fistula (good, 20.3% vs. poor, 60.0%; p < 0.001), horizontal distance rate (good, 0.57 vs. poor, 0.48; p = 0.02), and postoperative hospitalization period (good, 15 vs. poor, 35 days; p < 0.001). However, there was no significant difference in the vertical distance rate (good, 0.67 vs. poor, 0.71; p = 0.22). The horizontal distance rate was the independent risk factor for postoperative poor oral intake at 2-3 weeks (risk ratio, 3.69; 95% CI: 1.48-9.20). DISCUSSION: The oral intake was greater in patients whose gastrojejunostomy position in PD was farther from the median, suggesting the necessity of intraoperative placement of the gastrojejunostomy position as far from the median as possible.

Surgical Outcomes for Hepatocellular Carcinoma in Patients with Child-Pugh Class B: a Retrospective Multicenter Study.

BACKGROUNDS: Liver resection for hepatocellular carcinoma (HCC) in patients with Child-Pugh class (CPC) B increases the incidence of postoperative complication and in-hospital death and decreases the disease-free survival (DFS) and overall survival (OS) compared with those with CPC A. Conversely, some selected patients possibly gained benefits for liver resection. METHODS: Clinical records of 114 patients with CPC B who underwent liver resection for HCC were retrospectively reviewed. The risk of postoperative complications (Clavien-Dindo classification grade of ≥ II), postoperative recurrence, and death was analyzed. RESULTS: Postoperative complications occurred in 36 patients (31.6%), and 2 died within 90 days postoperatively due to the liver and respiratory failure, respectively. Multivariate analysis indicated that albumin-bilirubin (ALB) grade III and extended operation time were found as independent risk factors for postoperative complications. The DFS and OS rates at 3/5 years after liver resection were 30.8%/25.3% and 68.4%/48.9%, respectively. Multivariate analysis indicated that the extended blood loss, high α-fetoprotein (AFP) level (≥ 200 ng/mL), and Barcelona Clinic Liver Cancer stage C were found to be independent risk factors for postoperative recurrence. The high AFP level was also an independent prognostic factor for OS. Patients with high AFP levels had postoperative recurrence within 2 years and a higher number of extrahepatic recurrences than those with low AFP levels (< 200 ng/mL). CONCLUSION: For patients with HCC with CPC B who were scheduled for liver resection, ALBI grade III and high AFP level should be considered as unfavorable outcomes after liver resection.

Preoperative Predictive Nomogram Based on Alanine Aminotransferase, Prothrombin Time Activity, and Remnant Liver Proportion (APART Score) to Predict Post-Hepatectomy Liver Failure after Major Hepatectomy.

INTRODUCTION: Post-hepatectomy liver failure (PHLF) is a serious complication associated with major hepatectomies. An accurate prediction of PHLF is necessary to determine the feasibility of major hepatectomy. This study aimed to assess the association between PHLF and preoperative laboratory and computed tomography (CT) findings. METHODS: Medical records of 65 patients who underwent major hepatectomy and preoperative CT were retrospectively reviewed. We evaluated future remnant liver volume evaluation models and remnant liver hemodynamics, which were assessed by arterial enhancement fraction (AEF) by using preoperative CT. Variables, including CT findings, were compared between patients with and without PHLF after major hepatectomy, and the preoperative PHLF-predicting nomogram was constructed using multivariate logistic regression. RESULTS: The PHLF group included 21 patients (32.3%). The AEF was not significantly different between the two groups. In the future remnant liver volume evaluation models, future remnant liver proportion (fRLP) had the highest concordance index (C-index) in the receiver operating characteristic curve analysis (C-index, 0.755). Multivariate analysis of preoperative evaluable factors revealed that alanine aminotransferase levels (p = 0.034), prothrombin time activity (p = 0.021), and fRLP (p = 0.012) were independent predictive factors of PHLF. A nomogram (APART score) was constructed using these three factors, with a receiver operating curve showing a C-index of 0.894. According to the APART score, scores of 51-60 indicated moderate risk (40.0%), and scores over 60 indicated a high risk of PHLF (83.3%) (p < 0.001). DISCUSSION: The APART score may help predict PHLF in patients indicated for major hepatectomies.

Preoperative Serum Markers and Risk Classification in Intrahepatic Cholangiocarcinoma: A Multicenter Retrospective Study.

Accurate risk stratification selects patients who are expected to benefit most from surgery. This retrospective study enrolled 225 Japanese patients with intrahepatic cholangiocellular carcinoma (ICC) who underwent hepatectomy between January 2009 and December 2020 and identified preoperative blood test biomarkers to formulate a classification system that predicted prognosis. The optimal cut-off values of blood test parameters were determined by ROC curve analysis, with Cox univariate and multivariate analyses identifying prognostic factors. Risk classifications were established using classification and regression tree (CART) analysis. CART analysis revealed decision trees for recurrence-free survival (RFS) and overall survival (OS) and created three risk classifications based on machine learning of preoperative serum markers. Five-year rates differed significantly (p < 0.001) between groups: 60.4% (low-risk), 22.8% (moderate-risk), and 4.1% (high-risk) for RFS and 69.2% (low-risk), 32.3% (moderate-risk), and 9.2% (high-risk) for OS. No difference in OS was observed between patients in the low-risk group with or without postoperative adjuvant chemotherapy, although OS improved in the moderate group and was prolonged significantly in the high-risk group receiving chemotherapy. Stratification of patients with ICC who underwent hepatectomy into three risk groups for RFS and OS identified preoperative prognostic factors that predicted prognosis and were easy to understand and apply clinically.

The Change in the Fibrosis-4 Index for the Assessment of Liver Fibrosis After Pancreaticoduodenectomy.

OBJECTIVES: Nonalcoholic fatty liver is a complication of pancreaticoduodenectomy (PD); however, liver fibrosis after PD is not well documented. Therefore, we estimated the hepatic fibrotic index of nonalcoholic fatty liver after PD. METHODS: We retrospectively examined the electronic medical records of patients who had underwent PD and had computed tomography (CT) records preoperatively and 6 months postoperatively between 2011 and 2019 at the Shiga University of Medical Science Hospital. RESULTS: Overall, 115 patients were enrolled. After 6 months from PD, body mass index significantly decreased from 21.90 to 19.57 kg/m2 (-10.6%). The Fibrosis-4 (FIB-4) index significantly increased from 1.756 to 2.384 (P < 0.001). The FIB-4 grade significantly worsened. Contrarily, neither the albumin-bilirubin (ALBI) score nor the ALBI grade demonstrated significant differences. The CT attenuation value significantly decreased (P < 0.001) from 57.6 to 49.5. Multivariate analysis predicted a high preoperative FIB-4 index, high ALBI index, and hypo-CT attenuation value (<30 HU) as risk factors for a high postoperative FIB-4 index. CONCLUSIONS: The FIB-4 index worsened when the follow-up period was only 6 months, regardless of the eternalness in the ALBI score. Liver fibrosis should be assessed using the FIB-4 index for a long-term survivorship after PD.