Publications by authors named "Jean Marc Ferraz"

Background/aim: The validity of laparoscopic distal pancreatectomy in left-sided pancreatic adenocarcinoma (PDAC) is still unclear. However, a meticulous surgical dissection through a "no-touch" technique might allow a radical oncological resection with minimal risk of tumor dissemination and seeding. This study aimed to evaluate the oncological outcomes of the laparoscopic "no touch" technique versus the "touch" technique.

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Introduction: Anaesthesia in morbidly obese people is challenging with a high dose of opioid consumption. This systematic review and meta-analysis of randomised controlled trials (RCTs) summaries evidence comparing ketamine to placebo for pain management after bariatric surgery.

Methods: We used PRISMA 2020 and AMSTAR 2 guidelines to conduct this study.

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Background: Even though minimally invasive esophageal surgery (MIE) is spreading, questions remain regarding its oncological outcomes. The aim of this study was to assess the quality of oncological resection criteria in MIE.

Methods: All patients undergoing a two-way Ivor Lewis esophagectomy for esophageal or junctional cancer between 2010 and 2020 in a single tertiary upper gastrointestinal surgery ward were analyzed retrospectively.

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Background: Sleeve gastrectomy (SG) is the most common bariatric procedure performed worldwide. However, without a standardised surgical technique, heterogeneous outcomes and complications such as gastro-oesophageal reflux disease (GERD) have been reported. The aim of this study was to identify reproducible anatomical criteria for SG to obtain safe and effective results.

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To identify predictive factors for reoperation because of anastomotic leakage (AL) after colectomy. Between 2007 and 2016, all patients who developed AL following right or left colectomy in an expert center were included. Patients who were treated surgically (all including fecal diversion) were compared with those who were managed conservatively.

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Background: Perioperative outcomes of repeat laparoscopic colorectal resection (LCRR) have not been extensively reported.

Methods: Patients who underwent LCRR from 2010 to 2018 in an expert center were retrieved from a prospectively collected database and compared to 2:1 matched sample. Matching was based on demographics, surgical indication [colorectal cancer (CRC) or benign condition], and type of resection (right-sided resection or left-sided resection or proctectomy).

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This study was designed to monitor circulating tumor DNA (ctDNA) levels during perioperative chemotherapy in patients with non-metastatic gastric adenocarcinoma. Plasma samples were prospectively collected in patients undergoing perioperative chemotherapy for non-metastatic gastric adenocarcinoma (excluding T1N0) prior to the initiation of perioperative chemotherapy, before and after surgery (NCT02220556). In each patient, mutations retrieved by targeted next-generation sequencing (NGS) on tumor samples were then tracked in circulating cell-free DNA from 4 mL of plasma by droplet digital PCR.

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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.

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Diverticula of the middle one third of the esophagus are rare clinical entities, by comparison with the more common epiphrenic diverticula. For midesophageal diverticula, a minimally invasive approach has not been standardized. This report presents the case of a 60-year-old man with a large midesophageal diverticulum who was treated successfully by four-port video-assisted thoracic surgery while he was in the prone position.

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Background: Laparoscopic resection (LR) offers significant advantages compared to open resections for gastric gastrointestinal stromal tumours (GISTs). We aimed to evaluate whether LR outcomes jeopardised short and long-term outcomes of patients with large GISTs.

Patients And Methods: Among 50 patients undergoing surgery for gastric GISTs, 12 underwent LR for large GISTs (>5 cm).

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Background: Despite the increasing prevalence of obesity, the impact of body weight on postoperative outcomes of laparoscopic liver resection (LLR) still remains poorly evaluated. The present study aimed to explore the impact of body mass index (BMI) on perioperative outcomes in patients undergoing LLR.

Study Design: All patients undergoing LLR from January 2008 to December 2013 were retrospectively reviewed.

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The RAS-MAPK, PI (3)K signaling pathways form a network that play a central role in tumorigenesis. The BRAF, KRAS and PI3KCA genes code 3 partners of this network and have been found to be activated by mutation in colorectal cancer; these mutations lead to unrestricted cell growth. We evaluated the clinicopathological features and the prognosis of patients with activated-network colon cancers in a population-based study.

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Purpose: Matrix metalloproteinase (MMP) belongs to a large group of proteases capable of breaking essentially all components of the extracellular matrix. They are implicated in all steps of tumorogenesis, cancer invasion, and metastasis. Among them, metalloproteinase type 1 (MMP-1) is implicated in tumor invasion and metastasis in different types of cancers including colorectal cancer in which its expression was correlated with poor prognosis.

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Purpose: The target enzyme for 5-fluorouracil (5-FU) is thymidylate synthase (TS). The TYMS gene encoding this enzyme is polymorphic, having either double (2R) or tri-tandem (3R) repeats of a 28-bp sequence in the promoter region and a 6-bp variation in the 3'-untranslated region (3'-UTR). TS expression predicts response to 5-FU-based chemotherapy, and the expression seems to be determined by the TYMS gene promoter.

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Which carcinogens are of influence in the development of human colorectal cancers remains a question; one answer could be the finding that specific polymorphisms in xenobiotic metabolizing enzymes are related to particular mutations in cancer genes. KRAS2 and TP53 gene mutations as well as genotypes for GSTM1, GSTP1, GSTT1 and NAT2 were determined in an exploratory series of 165 stable colorectal cancers. Mutations in KRAS2 and TP53 were found in 34% and 57.

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Objective: To evaluate early and late morbidity of laparoscopic adjustable gastric banding for morbid obesity and to assess the efficacy of this procedure by analyzing its results.

Summary Background Data: Laparoscopic adjustable gastric banding is considered the least invasive surgical option for morbid obesity. It is effective, with an average loss of 50% of excessive weight after 2 years of follow-up.

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