Abdominal surgery in patients with chronic noncirrhotic extrahepatic portal vein obstruction: A multicenter retrospective study.

BACKGROUND AND AIMS: In patients with noncirrhotic chronic extrahepatic portal vein obstruction (EHPVO), data on the morbimortality of abdominal surgery are scarce. APPROACH AND RESULTS: We retrospectively analyzed the charts of 76 patients (78 interventions) with EHPVO undergoing abdominal surgery within the Vascular Disease Interest Group network. Fourteen percent of the patients had ≥1 major bleeding (unrelated to portal hypertension) and 21% had ≥1 Dindo-Clavien grade ≥3 postoperative complications within 1 month after surgery. Fifteen percent had ≥1 portal hypertension-related complication within 3 months after surgery. Three patients died within 12 months after surgery. An unfavorable outcome (ie, ≥1 abovementioned complication or death) occurred in 37% of the patients and was associated with a history of ascites and with nonwall, noncholecystectomy surgical intervention: 17% of the patients with none of these features had an unfavorable outcome, versus 48% and 100% when one or both features were present, respectively. We then compared 63/76 patients with EHPVO with 126 matched (2:1) control patients without EHPVO but with similar surgical interventions. As compared with control patients, the incidence of major bleeding ( p <0.001) and portal hypertension-related complication ( p <0.001) was significantly higher in patients with EHPVO, but not that of grade ≥3 postoperative complications nor of death. The incidence of unfavorable postoperative outcomes was significantly higher in patients with EHPVO than in those without (33% vs. 18%, p =0.01). CONCLUSIONS: Patients with EHPVO are at high risk of major perioperative or postoperative bleeding and postoperative complications, especially in those with ascites or undergoing surgery other than wall surgery or cholecystectomy.

Open Versus Laparoscopic Right Hepatectomy for Hepatocellular Carcinoma Following Sequential TACE-PVE: A Multicentric Comparative Study.

BACKGROUND: Right hepatectomy (RH) for hepatocellular carcinoma (HCC) is ideally preceded by transcatheter arterial chemoembolization (TACE) and portal vein embolization (PVE). Laparoscopic approach improves short-term outcome and textbook outcome (TO), which reflects the "ideal" surgical outcome, after RH. However, laparoscopic RH on an underlying diseased liver and after TACE/PVE remains a challenging procedure. The aim of this study was to compare the outcomes in patients who underwent laparoscopic liver resection (LLR) or open liver resection (OLR) following TACE/PVE. PATIENTS AND METHODS: All patients with HCC who underwent RH after TACE/PVE in five French centers were retrospectively included. Outcomes were compared between the LLR group and the OLR group using propensity score matching (PSM). Quality of surgical care was defined by TO. RESULTS: Between 2005 and 2019, 117 patients were included (41 in LLR group, 76 in OLR group). Overall morbidity was comparable (51% versus 53%, p = 0.24). In LLR group, TO was completed in 66% versus 37% in OLR group (p = 0.02). LLR and absence of clamping were the only factors associated with TO completion [hazard ratio (HR) 4.27, [1.77-10.28], p = 0.001]. After PSM, 5-year overall survival (OS) and progression-free survival (PFS) were 55% in matched LLR versus 77% in matched OLR, p = 0.35, and 13% in matched LLR versus 17% in matched OLR, p = 0.97. TO completion was independently associated with a better 5-year OS (65.2% versus 42.5%, p = 0.007). CONCLUSION: Major LLR after TACE/PVE should be considered as a valuable option in expert centers to increase the chance of TO, the latter being associated with a better 5-year OS.

Development and technical validation of an ultrasound nebulizer to deliver intraperitoneal pressurized aerosols in a rat colon cancer peritoneal metastases model.

BACKGROUND/AIM: To develop and validate a nebulizer device for anti-cancer research on pressurized intraperitoneal aerosol supply in a preclinical peritoneal metastases (PM) rat model. MATERIAL AND METHODS: For aerosol generation, an ultrasonic nebulizer (USN) was modified. Aerosol analyses were performed ex-vivo by laser diffraction spectrometry (LDS). Intraperitoneal (IP) 99mtechnetium sodium pertechnetate (99mTc) aerosol distribution and deposition were quantified by in-vivo single photon emission computed tomography (SPECT/CT) and compared to liquid IP instillation of equivalent volume/doses of 99mTc with and without capnoperitoneum. PM was induced by IP injection of HCT116-Luc2 human colon cancer cells in immunosuppressed RNU rats. Tumor growth was monitored by bioluminescence imaging (BLI), 18F-FDG positron emission tomography (PET) and tissues examination at necropsy. RESULTS: The USN was able to establish a stable and reproducible capnoperitoneum at a pressure of 8 to 10 mmHg. LDS showed that the USN provides a polydisperse and monomodal aerosol with a volume-weighted diameter of 2.6 µm. At a CO2 flow rate of 2 L/min with an IP residence time of 3.9 s, the highest drug deposition efficiency was found to be 15 wt.-%. In comparison to liquid instillation, nebulization showed the most homogeneous IP spatial drug deposition. Compared to BLI, 18F-FDG-PET was more sensitive to detect smaller PM nodules measuring only 1-2 mm in diameter. BLI, 18F-FDG PET and necropsy analyses showed relevant PM in all animals. CONCLUSIONS: The USN together with the PM rat model are suitable for robust and species-specific preclinical pharmacological studies regarding intraperitoneal delivery of pressurized aerosolized drugs and cancer research.

Simultaneous or staged resection for synchronous liver metastasis and primary rectal cancer: a propensity score matching analysis.

BACKGROUND: Colorectal cancer is the third most common cancer in France and by the time of the diagnosis, 15-25% of patients will suffer from synchronous liver metastases. Surgery associated to neoadjuvant treatment can cure these patients, but few studies focus only on rectal cancer. This study was meant to compare the outcomes of patients who underwent a simultaneous resection to those who underwent a staged resection (rectum first or liver first) in the University Hospital of Tours, France. METHODS: We assessed retrospectively a prospective maintained data base about the clinical, pathological and survival outcomes of patients who underwent a simultaneous or a staged resection in our center between 2010 and 2018. A propensity score matching was used, considering the initial characteristics of our groups. RESULTS: There were 70 patients (55/15 males, female respectively) with median age 60 (54-68) years. After matching 48 (69%) of them underwent a staged approach and 22 (31%) a simultaneous approach were compared. After PSM, there were 22 patients in each group. No differences were found in terms of morbidity (p = 0.210), overall survival (p = 0.517) and disease-free survival (p = 0.691) at 3 years after matching. There were significantly less recurrences in the simultaneous group (50% vs 81.8%, p = 0.026). CONCLUSIONS: Simultaneous resection of the rectal primary cancer and synchronous liver metastases is safe and feasible with no difference in terms of survival.

Pressurized Intraperitoneal Aerosol Chemotherapy for Colorectal Peritoneal Metastases.

BACKGROUND: The benefit of repetitive PIPAC specifically in CPM patients has yet to be demonstrated in terms of oncological and functional outcomes. OBJECTIVE: The aim of this study was to evaluate the outcome of patients with non-resectable colorectal peritoneal metastases (CPM) treated with pressurized intraperitoneal aerosol chemotherapy (PIPAC). METHODS: We conducted an analysis of a prospective single-center database of all CPM patients who underwent PIPAC with oxaliplatin 92 mg/m2 body surface (PIPAC-Ox). The outcome criteria were adverse events (Common Terminology Criteria for Adverse Events version 4.0), Peritoneal Regression Grading Score (PRGS), and survival. RESULTS: Overall, 102 patients with a median age of 64 years (33-88) were scheduled for PIPAC-Ox. Access to the abdominal cavity for the first application failed in 22/102 (21.6%) patients. A total of 185 PIPACs were performed, with 26/102 (25.5%), 20/102 (19.6%), 17/102 (16.7%), and 17/102 (16.7%) patients undergoing one, two, three, and four or more PIPACs, respectively. Perioperative overall morbidity/mortality Grade I-V occurred in 14 (7.6%), 29 (15.8%), 6 (3.2%), 1 (0.5%), and 1 (0.5%) patient without significant differences between each cycle. Of 27 patients who underwent three or more PIPACs, 20/102 (19.6%) had major/complete CPM regression (PRGS 1-2). In a multivariate analysis, independent predictive factors for > 12 months' survival following the first PIPAC-Ox administration were three or more PIPACs (odds ratio [OR] 4.5, 95% confidence interval [CI] 1.35-15.2; p = 0.014) and younger patient age (OR 1.058, 95% CI 1.00-1.12; p = 0.039). CONCLUSIONS: Repetitive PIPAC-Ox for CPM patients, alone or combined with perioperative systemic chemotherapy, is feasible. Our data suggest that three or more consecutive PIPAC-Ox cycles for advanced CPM can improve survival.

Abdominal Surgery in Patients With Idiopathic Noncirrhotic Portal Hypertension: A Multicenter Retrospective Study.

In patients with idiopathic noncirrhotic portal hypertension (INCPH), data on morbidity and mortality of abdominal surgery are scarce. We retrospectively analyzed the charts of patients with INCPH undergoing abdominal surgery within the Vascular Liver Disease Interest Group network. Forty-four patients with biopsy-proven INCPH were included. Twenty-five (57%) patients had one or more extrahepatic conditions related to INCPH, and 16 (36%) had a history of ascites. Forty-five procedures were performed, including 30 that were minor and 15 major. Nine (20%) patients had one or more Dindo-Clavien grade ≥ 3 complication within 1 month after surgery. Sixteen (33%) patients had one or more portal hypertension-related complication within 3 months after surgery. Extrahepatic conditions related to INCPH (P = 0.03) and history of ascites (P = 0.02) were associated with portal hypertension-related complications within 3 months after surgery. Splenectomy was associated with development of portal vein thrombosis after surgery (P = 0.01). Four (9%) patients died within 6 months after surgery. Six-month cumulative risk of death was higher in patients with serum creatinine ≥ 100 µmol/L at surgery (33% versus 0%, P < 0.001). An unfavorable outcome (i.e., either liver or surgical complication or death) occurred in 22 (50%) patients and was associated with the presence of extrahepatic conditions related to INCPH, history of ascites, and serum creatinine ≥ 100 µmol/L: 5% of the patients with none of these features had an unfavorable outcome versus 32% and 64% when one or two or more features were present, respectively. Portal decompression procedures prior to surgery (n = 10) were not associated with postoperative outcome. Conclusion: Patients with INCPH are at high risk of major surgical and portal hypertension-related complications when they harbor extrahepatic conditions related to INCPH, history of ascites, or increased serum creatinine.

Long term outcome of anastomotic leakage in patients undergoing low anterior resection for rectal cancer.

BACKGROUND: The influence of anastomotic leakage (AL) on local recurrence rates and survival in rectal cancer remains controversial. The aim of this study was to analyze the effect of asymptomatic anastomotic leakage (AAL) and symptomatic anastomotic leakage (SAL) on short- and long-term outcome after curative rectal cancer resection. METHODS: All patients who underwent surgical resection of non-metastatic rectal cancer with curative intent from January 2005 to December 2017 were retrospectively analyzed. Short-term morbidity, long-term functional and oncological outcomes were compared between patients with SAL, AAL and without AL (WAL). RESULTS: Overall, 200 patients were included and AL was observed in 39 (19.5%) patients (10 AAL and 29 SAL) with a median follow-up of 38.5 months. Rectal cancer location and preoperative neoadjuvant treatment was similar between the three groups. Postoperative 30-day mortality rate was nil. The permanent stoma rate was higher in patients with SAL or AAL compared to WAL patients (44.8 and 30% vs 9.3%, p < 0.001). The mean wexner continence grading scale was significantly different between AAL (11,4 ± 3,8), SAL (10,3 ± 0,6) and WAL (6,4 ± 4,7) groups (p = 0.049). The 3 and 5-year overall and disease-free survival rates were similar between the 3 groups (86.6% /84% vs 100%/100% vs 76%/70 and 82.9%/77% vs 100%/100% vs 94.7%/88.3% for patients with SAL, AAL, and WAL, p = 0.480 and p = 0.527). CONCLUSION: The permanent stoma rate was significant higher in patients with SAL or AAL compared to WAL patients. AL did not impair long-term oncological outcome.

Perioperative and long-term outcomes of laparoscopic liver resections for non-colorectal liver metastases.

BACKGROUND: Liver is a common metastatic site not only of colorectal but of non-colorectal neoplasms, as well. However, resection of non-colorectal liver metastases (NCRLMs) remains controversial. The aim of this retrospective study was to analyze the short- and long-term outcomes of patients undergoing laparoscopic liver resection (LLR) for NCRLMs. METHODS: From a prospectively maintained database between 2000 and 2018, patients undergoing LLR for colorectal liver metastases (CRLMs) and NCRLMs were selected. Clinicopathologic, operative, short- and long-term outcome data were collected, analyzed, and compared among patients with CRLMs and NCRLMs. RESULTS: The primary tumor was colorectal in 354 (82.1%), neuroendocrine in 21 (4.9%), and non-colorectal, non-neuroendocrine in the remaining 56 (13%) patients. Major postoperative morbidities were 12.7%, 19%, and 3.6%, respectively (p = 0.001), whereas the mortality was 0.6% for patients with CRLMs and zero for patients with NCRLMs. The rate of R1 surgical margin was comparable (p = 0.432) among groups. According to the survival analysis, 3- and 5-year recurrence-free survival (RFS) rates were 76.1% and 64.3% in the CRLM group, 57.1% and 42.3% in the neuroendocrine liver metastase (NELM) group, 33% and 20.8% in the non-colorectal, non-neuroendocrine liver metastase (NCRNNELM) group (p = 0.001), respectively. Three- and 5-year overall survival (OS) rates were 88.3% and 82.7% in the CRLM group, 85.7% and 70.6% in the NELM group, 71.4% and 52.9% in the NCRNNELM group (p = 0.001), respectively. In total, 113 out of 354 (31.9%) patients with CRLMs, 2 out of 21(9.5%) with NELMs, and 8 out of 56 (14.3%) patients with NCRNNELMs underwent repeat LLR for recurrent metastatic tumors. CONCLUSION: LLR is safe and feasible in the context of a multimodal management where an aggressive surgical approach, necessitating even complex procedures for bilobar multifocal metastases and repeat hepatectomy for recurrences, is the mainstay and may be of benefit in the long-term survival, in selected patients with NCRNNELMs.

Laparoscopic Parenchymal-Sparing Hepatectomy for Multiple Colorectal Liver Metastases Improves Outcomes and Salvageability: A Propensity Score-Matched Analysis.

BACKGROUND: Parenchymal-sparing hepatectomy (PSH) is regarded as the standard of care for colorectal liver metastases (CRLMs) in open surgery. However, the surgical and oncological benefits of laparoscopic PSH compared with laparoscopic major hepatectomy (MH) have not been fully documented. METHODS: A total of 269 patients who underwent initial laparoscopic liver resections with curative intent for CRLMs between 2004 and 2017 were enrolled. Preoperative patient characteristics and tumor burden were adjusted with propensity score matching, and laparoscopic PSH was compared with laparoscopic MH after matching. RESULTS: PSH was performed in 148 patients, while MH was performed in 121 patients. After propensity score matching, 82 PSH and 82 MH patients showed similar preoperative characteristics. PSH was associated with lower rates of major postoperative complications compared with MH (6.1 vs. 15.9%; p = 0.046). Recurrence-free survival (RFS) and liver-specific RFS rates were comparable between both groups (p = 0.595 and 0.683). Repeat hepatectomy for liver recurrence was more frequently performed in the PSH group (63.9 vs. 36.4%; p = 0.022), and the PSH group also showed a trend toward a higher overall survival (OS) rate (5-year OS 79.4 vs. 64.3%; p = 0.067). Multivariate analyses revealed that initial MH was one of the risk factors to preclude repeat hepatectomy after liver recurrence (hazard ratio 2.39, p = 0.047). CONCLUSIONS: Laparoscopic PSH provided surgical and oncological benefits for CRLMs, with less complications, similar recurrence rates, and increased salvageability through repeat hepatectomy, compared with laparoscopic MH. PSH should be the standard approach, even in laparoscopic procedures.

Comparison of Tissue and Blood Concentrations of Oxaliplatin Administrated by Different Modalities of Intraperitoneal Chemotherapy.

BACKGROUND: Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a new technology for delivering intraperitoneal chemotherapy. It is generally assumed that with PIPAC, the ratio of peritoneal to systemic drug concentration is superior to liquid hyperthermic intraperitoneal chemotherapy (HIPEC). To date, no direct comparative data are available supporting such an assumption. MATERIALS AND METHODS: Twelve 65-day-old pigs were randomly separated into three groups of four pigs each, all of which received intraperitoneal chemotherapy using the following administration methods: PIPAC with oxaliplatin 92 mg in 150 ml dextrose 5% (Group 1); PIPAC with electrostatic aerosol precipitation (ePIPAC; Group 2); or laparoscopic HIPEC (L-HIPEC) with oxaliplatin 400 mg in 4 L dextrose 5% at 42 °C (Group 3). Serial blood and peritoneal tissue concentrations of oxaliplatin were determined by spectrometry. RESULTS: In all three groups, the maximum concentration of oxaliplatin in blood was detected 50-60 min after onset of the chemotherapy experiments, with no significant differences among the three groups (p = 0.7994). Blood oxaliplatin concentrations (0-30 min) were significantly higher in the L-HIPEC group compared with the ePIPAC group (p < 0.05). No difference was found for the overall systemic oxaliplatin absorption (area under the curve). Overall concentrations in the peritoneum were not different among the three groups (p = 0.4725), but were significantly higher in the visceral peritoneum in the PIPAC group (p = 0.0242). CONCLUSIONS: Blood and tissue concentrations were comparable between all groups; however, depending on the intraperitoneal area examined and the time points of drug delivery, the concentrations differed significantly between the three groups.

Enhanced recovery protocols in colonic surgery: retrospective cohort analysis of economic impact from an institutional point of view.

BACKGROUND: Despite increasing evidence supporting the beneficial effects of enhanced recovery protocols (ERPs), their accurate economic impact on institutions remains lacking. The aim of this study was to analyze ERP economic impact in a French center in order to further encourage implementation. METHODS: All patients who underwent elective laparoscopic right or left colectomy for benign or malignant pathology from 2014 to 2017 in a single center were retrospectively reviewed. ERP according to national recommendations was effective starting November 2015. Perioperative data and all direct costs borne by the institution were collected for each patient. Patients who underwent colectomy before and after ERP implementation were compared. RESULTS: Overall, 288 patients were included of which 144 received conventional perioperative care (CC) and 144 received ERP. There were 161 (56%) men, median age was 71 (28-92) years, and 242 (84%) patients underwent surgery for malignant disease. Operative time, intraoperative blood loss, and severe postoperative complications were similar between both groups. ERP was associated with reduced Clavien-Dindo I-II postoperative complications (15% vs. 28%, p = 0.010) and overall in-hospital stay (6 vs. 7 days, p = 0.003). Overall institutional costs were lower in the ERP group although difference was not statistically significant (7022 vs. 7501 euros, p = 0.098). Estimated savings per patient reached a mean of 480 euros. CONCLUSIONS: In a tertiary French center, ERP was associated with reduced postoperative morbidity and in-hospital stay resulting in considerable cost savings. Although not significant, ERP resulted in positive economic impact even in an early implementation phase.

After laparoscopic liver resection for colorectal liver metastases, age does not influence morbi-mortality.

BACKGROUND: Hepatectomy remains the only curative option in patients presenting with colorectal liver metastases (CLM). Although laparoscopic approach has improved postoperative morbidity and mortality rates, its suitability for patients of all age groups has yet to be confirmed. The aim of this study was to analyze postoperative outcomes following laparoscopic liver resection (LLR) in different age groups of patients presenting with CLM. METHODS: All patients who underwent LLR for CLM from 2008 to 2017 were reviewed. Patients were divided into four age groups: < 55, 55-65 years, 65-75 and > 75 years. Baseline and intraoperative characteristics as well as postoperative morbidity and mortality were compared between all four groups. RESULTS: Overall, 335 patients were included with 34 (10%), 113 (34%), 136 (41%) and 52 (15%) in < 55, 55-65, 65-75 and > 75 years subgroups. Baseline characteristics were similar between all four groups except for elevated pressure, dyslipidemia and ASA score which were higher in older patients. Regarding surgical procedures, major hepatectomy, uni- or bisegmentectomy and wedge resection were performed in 122 (36%), 87 (26%) and 126 (38%) patients, respectively, with no significant differences between age groups. Overall, 90-day postoperative mortality rate was nil and postoperative morbidity was similar between all four groups except for biliary fistula occurrence, which was higher in < 55 years patients (p = 0.006). CONCLUSION: Short-term postoperative outcome following LLR for CLM does not seem to be affected by age. Curative laparoscopic treatment should therefore be considered whenever possible, regardless of patient age.

Liver resection for extra-pancreatic biliary cancer: what is the role of laparoscopic approach?

BACKGROUND: Laparoscopic liver resection (LLR) has evolved over time, yet its role in extra-pancreatic biliary cancer has been limited due to several factors. We aimed to evaluate the short-term outcome of LLR in extra-pancreatic biliary tract cancer. METHODS: From January 2002 to 2016, all patients who underwent LLR for extra-pancreatic biliary tract cancer including gallbladder cancer (GBC), intra-hepatic cholangiocarcinoma (ICC), and peri-hilar cholangiocarcinoma (PHC) with curative intent (R0 or R1) at Institute Mutualiste Montsouris were identified from prospectively collected databases. Patient characteristics, and perioperative outcomes, were analyzed in all three groups. RESULTS: A total of 35 patients were included: 10 with GBC, 14 with ICC, and 11 with PHC. There were 19 (54%) women and median age was 71 years. Median operative time was 240 min, and estimated blood loss was 200 ml. Conversion to an open procedure was more common in patients with PHC (45% vs. 7% for ICC and 0% for GBC, p = 0.010). R0 resection was achieved in 10 (100%), 12 (86%), and 8 (73%) patients in GBC, ICC, and PHC groups, respectively (p = 0.204). Postoperative morbidity was reported in 19 (54%) patients of whom 12 (34%) had minor complications. Postoperative mortality was reported in 4 (11%) patients; one (7%) in GBC group, one (7%) in ICC group, and two (18%) in PHC, p = 0.681. Median hospital stay was 11 days. CONCLUSIONS: The present series suggests that LLR is feasible in GBC, challenging but achievable in ICC but unsuitable for the moment in PHC.

Risk factors for postoperative ileus following elective laparoscopic right colectomy: a retrospective multicentric study.

PURPOSE: Postoperative ileus (POI) is associated with an elevated risk of other complications and increases the economic impact on healthcare services. The aim of this study was to identify pre-, intra- and postoperative risk factors associated with the development of POI following elective laparoscopic right colectomy. METHODS: Between 2004 and 2016, 637 laparoscopic right colectomies were performed. Data were analysed retrospectively thanks to the CLIHMET database. Potential contributing factors were analysed by logistic regression. RESULTS: Patients with POI (n = 113, 17.7%) were compared to those without postoperative ileus (WPOI) (n = 524, 82.3%). In the POI group, there were more men (62 vs 49%; p = 0.012), more use of epidural anaesthesia (19 vs 9%; p = 0.004), more intraoperative blood transfusion requirements (7 vs 3%; p = 0.018) and greater perioperative intravenous fluid administration (2000 vs 1750 mL; p < 0.001). POIs were more frequent when extracorporeal vascular section (20 vs 12%; p = 0.049) and transversal incision for extraction site (34 vs 23%; p = 0.044) were performed. Overall surgical complications in the POI group were significantly greater than in the control group WPOI (31.9 vs 12.0%; p < 0.0001). Multivariate analysis found the following independent POI risk factors: male gender (HR = 2.316, 1.102-4.866), epidural anaesthesia (HR = 2.958, 1.250-6.988) and postoperative blood transfusion requirement (HR = 6.994, 1.550-31.560). CONCLUSIONS: This study is one of the first to explore the CLIHMET database and the first to use it for investigating risk factors for POI development. Modifiable risk factors such as epidural anaesthesia and intraoperative blood transfusion should be used with caution in order to decrease POI rates.

Recurrence patterns after laparoscopic resection of colorectal liver metastases.

BACKGROUND: The major issue after liver resection for colorectal liver metastases (CRLM) is the high incidence of recurrence. Unlike open liver resection (OLR), recurrence following laparoscopic liver resection (LLR) is not well documented. The aim of this study was to analyze recurrence patterns and treatment following LLR for CRLM. STUDY DESIGN: All patients who underwent LLR for CRLM from 2000 to 2016 were reviewed. Patients who presented with recurrence were compared to those who did not. Recurrence-free survival (RFS), overall survival (OS), and risk of recurrence and survival prognostic factors were analyzed. RESULTS: Overall, 273 patients were included, of which 157 (57.5%) were treated for one liver metastasis (LM). Median follow-up was 41 (12-187) months and associated extrahepatic disease was present in 27% of patients (mainly pulmonary, 65%). After a median of 16 (3-151) months, 197 (72%) patients presented with recurrence. Recurrences were early (< 6 months) in 22.8% of cases, occured in a single site in 66% and were intrahepatic, extrahepatic, or both in 44, 30, and 26%, respectively. Recurrences were treated with surgery or chemotherapy only in 45 and 47%, respectively. 3-, 5-, and 10-year OS was 82, 71, and 43%, respectively. Independent risk factors for recurrence were node-positive primary tumor, extrahepatic disease before hepatectomy, and R1 resection. CONCLUSION: LLR for CRLM does not seem to be associated with distinctive recurrence patterns. LLR for CRLM yielded satisfying RFS and OS and should therefore be considered whenever possible.

Specific features of colorectal cancer in patients with metabolic syndrome: a matched case-control analysis of 772 patients.

PURPOSE: Although association between colorectal cancer (CRC) and metabolic syndrome (MetS) is established, specific features of CRC arising in patients presenting with MetS have not been clearly identified. METHOD: All patients who underwent colectomy for CRC from January 2005 to December 2014 at Institut Mutualiste Montsouris were identified from a prospectively collected database and characteristics were compared in the entire population and in a 1:2 matched case-control analysis [variables on which matching was performed were CRC localization (right- or left-sided) and AJCC stage (0 to IV)]. RESULTS: Out of the 772 identified patients, 98 (12.7%) presented with MetS. Entire population analysis revealed that CRC associated with MetS was more frequent in men (71.4 vs. 47.8%, p < 0.001), more often right-sided (71.4 vs. 50.4%, p < 0.001) and presented with less synchronous liver metastasis (4.1 vs. 8.7%, p = 0.002). Case-control analysis confirmed the gender association (p < 0.001) and showed HNPCC (p < 0.001) and history family of CRC (p = 0.010) to be significantly more frequent in Non-MetS patients. CONCLUSIONS: CRC associated with MetS is more frequent in men, more often right-sided, and presents with fewer synchronous metastasis. Further investigations should be designed in order to confirm these results and to enhance our knowledge of carcinogenesis related to MetS.

Chylous Ascites Management After Pancreatic Surgery.

BACKGROUND: Postoperative chylous ascites (CA) following pancreatic surgery is uncommon. If left untreated, it leads to malnutrition, immunodeficiency and increased postoperative morbidity and mortality. The aim of this study was to seek out risk factors associated with CA onset and conservative treatment (CT) failure in order to determine better management of CA following pancreatic resection. MATERIALS AND METHODS: All consecutive patients who underwent pancreatic surgery between 2004 and 2014 were reviewed retrospectively. Main demographic, clinical and pathological data were searched for CA risk factors. Patients with CA successfully treated with CT alone were compared to those requiring additional bipedal lymphangiography (BPLAG) in order to seek out risk factors associated with CT failure. RESULTS: Fifteen patients (2.4 %) developed CA after pancreatic surgery. Para-aortic lymph node sampling and early enteral feeding were found to be independent risk factors for postoperative CA (OR 6.36, p = 0.024 and OR 12.18, p = 0.02, respectively). CT was successful in ten patients, and five patients required additional BPLAG to achieve CA resolution. Statistical analysis revealed no significant risk factors for CT failure, including total lymph node count (p = 0.196), para-aortic lymph node sampling (p = 0.661) or maximum chyle loss per day (p = 0.758). CONCLUSIONS: Owing to postoperative CA rarity, there is no consensus in treatment. Early on, CT should be attempted in all patients with CA. BPLAG is a safe and efficient procedure that should be discussed earlier in the step-up therapeutic management.

Comparison of the risk of postoperative infection between transurethral vaporesection and transurethral resection of the prostate.

BACKGROUND AND OBJECTIVE: We observed in our department at 3 months two episodes of bacteremia postoperatively to photoselective vaporization of the prostate (PVP). We decided to compare the frequency of postoperative urinary tract infections (POUTIs) in patients with preoperative bacterial colonization of urine between PVP and transurethral resection of the prostate (TURP). MATERIALS AND METHODS: From January 2010 to December 2011, we studied patients who underwent PVP or TURP for benign prostatic obstruction in our department. Preoperative urine culture (UC) was carried out for all patients and we included those with preoperative bacterial colonization of the urinary tract. Patients were treated preoperatively with an appropriate antibiotic treatment and/or inductive prophylactic antibiotics. Patients were diagnosed with POUTI if they had clinical signs of infections (e.g., fever) and a positive UC during the month after surgery. RESULTS: Patients were treated by PVP in 49 cases and TURP in 62 cases. A preoperative indwelling urinary catheter was inserted in 80% of the patients. During the postoperative period, eight episodes of fever were identified in the PVP group (16%), five (8%) in the TURP group (P = 0.18). We then studied the subgroup of patients with multiple bacteria strains present in the preoperative UC and identified significant differences. The risk of POUTI was significantly higher in patients treated by PVP than in those treated by TURP (P = 0.018). CONCLUSIONS: We found significant differences between subgroups of patients with positive preoperative cultures (containing various bacterial strains). The risk of POUTI was significantly higher in patients treated by PVP.