Publications by authors named "Patrick Pessaux"

Background: Biliary contamination significantly correlates with major comorbidities during pancreatic head resection. Recently, a piperacillin-tazobactam prophylaxis demonstrated a lower rate of infectious complications (IC) and postoperative pancreatic fistula (POPF) in this population. However, bacterial contamination is rare in patients without a preoperative biliary drainage (PBD) and probably could not benefit from this antibiotic.

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Background: While total mesorectal excision is the gold standard for rectal cancer, the optimal surgical approach to achieve adequate oncological outcomes remains controversial. This network meta-analysis aims to compare the histopathological outcomes of robotic (R-RR), transanal (Ta-RR), laparoscopic (L-RR), and open (O-RR) resections for rectal cancer.

Materials And Methods: MEDLINE, Embase, and the Cochrane Library were screened from inception to June 2024.

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  • - Intrahepatic cholangiocarcinoma is a severe form of cancer that behaves differently from other biliary cancers, prompting a study on the effects of its genetic mutations on survival outcomes after surgical resection.
  • - A systematic review of 24 studies revealed that mutations in the KRAS, IDH1/2, and TP53 genes significantly influenced patient survival rates, showcasing key differences in the prevalence of KRAS and IDH1/2 mutations between Western and Eastern populations.
  • - Understanding these genetic mutations can inform targeted therapies in treatment plans, although rare mutations may lead to inconsistent results and biases in prognostic assessments.
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  • - Robotic surgery is gaining popularity in the surgical field, especially for liver resections, but its effectiveness near major blood vessels needs further investigation.
  • - A study of 1030 patients categorized them into two groups (lesions in contact with major vessels vs. those free from) to compare surgical outcomes before and after adjusting for other variables.
  • - Findings indicated that while the Pringle Manoeuvre was more frequently used in surgeries near major vessels, overall operative time, complication rates, and surgery success were similar between both groups, suggesting robotic surgery is safe even for challenging cases.
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  • Chronic HBV infection leads to severe liver disease and liver cancer, and new antiviral treatments like Capsid Assembly Modulators (CAMs) are needed but not fully understood in their mechanism of action.
  • Recent research demonstrates that CAM-A compounds reduce HBsAg levels and cause cell death in HBV-infected cells by promoting the aggregation of HBV core proteins (HBc) in the nucleus, triggering apoptosis.
  • Discovering that CAM-A facilitates HBc aggregation and activates apoptosis provides insights for developing new therapies aimed at effectively managing chronic HBV infections.
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Objective: To issue recommendations for reduced energy consumption in controlled environment zones (CEZ) in operating theaters and interventional sectors.

Design: A committee bringing together seven experts from the SFAR, AFC, SF2H, ASPEC and SOFCOT was convened by CERES. A conflict-of-interest statement was developed at the beginning of the process and enforced throughout the elaboration of the reference document.

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  • - The modified FOLFIRINOX (mFFX) therapy improves outcomes for pancreatic ductal adenocarcinoma (PDAC) patients but is limited by higher toxicity, making it suitable only for patients with good performance status.
  • - Researchers created transcriptomic signatures to assess the sensitivity of the drugs in the mFFX regimen, validating them in a cohort of 167 advanced metastatic PDAC patients.
  • - The study found that these signatures correlated well with patient outcomes, suggesting they could help guide mFFX treatment and reduce unnecessary toxicity while maintaining clinical benefits.
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  • This study compares outcomes of open liver resection (OLR), laparoscopic liver resection (LLR), and percutaneous thermal ablation (PTA) in elderly patients (≥70 years) with single hepatocellular carcinoma (HCC) ≤30 mm.
  • A total of 239 patients were analyzed, revealing that PTA resulted in shorter hospital stays and less morbidity than OLR or LLR, but lower 5-year overall and disease-free survival rates.
  • The findings suggest that while PTA is advantageous for specific HCC locations, surgical options (OLR and LLR) offer better long-term survival outcomes for elderly patients.
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Objective: To compare minimally invasive and open pancreatoduodenectomy in different subtypes of ampullary adenocarcinoma.

Summary Background Data: Ampullary adenocarcinoma (AAC) is widely seen as the best indication for minimally invasive pancreatoduodenectomy (MIPD) due to the lack of vascular involvement and dilated bile and pancreatic duct. However, it is unknown whether outcomes of MIPD for AAC differ between the pancreatobiliary (AAC-PB) and intestinal (AAC-IT) subtypes as large studies are lacking.

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Background & Aims: Liver fibrosis is the major driver of hepatocellular carcinoma and liver disease-related death. Approved antifibrotic therapies are absent and compounds in development have limited efficacy. Increased TGF-β signaling drives collagen deposition by hepatic stellate cells (HSCs)/myofibroblasts.

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Background: Radical antegrade modular pancreato-splenectomy (RAMPS) has been largely described in left-sided pancreatic cancers.1.J Hepato-Biliary-Pancreat Sci 29:1156-1165 Its prognostic advantage is not clear, although a theoretical improvement in R0 resection rate has been shown.

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  • Minimally invasive liver surgery has become safer and more feasible over time, prompting this study to explore its effectiveness in elderly patients.
  • The research analyzed data from 1070 robotic liver resections across nine European hospitals, focusing on 131 major liver resections and comparing outcomes between patients under and over 65 years old.
  • Results show that while elderly patients had some increased complications, overall short-term outcomes for robotic major liver resection in this group were still satisfactory.
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Background: Cancer arising in the periampullary region can be anatomically classified in pancreatic ductal adenocarcinoma (PDAC), distal cholangiocarcinoma (dCCA), duodenal adenocarcinoma (DAC), and ampullary carcinoma. Based on histopathology, ampullary carcinoma is currently subdivided in intestinal (AmpIT), pancreatobiliary (AmpPB), and mixed subtypes. Despite close anatomical resemblance, it is unclear how ampullary subtypes relate to the remaining periampullary cancers in tumor characteristics and behavior.

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Background: Despite differences in tumour behaviour and characteristics between duodenal adenocarcinoma (DAC), the intestinal (AmpIT) and pancreatobiliary (AmpPB) subtype of ampullary adenocarcinoma and distal cholangiocarcinoma (dCCA), the effect of adjuvant chemotherapy (ACT) on these cancers, as well as the optimal ACT regimen, has not been comprehensively assessed. This study aims to assess the influence of tailored ACT on DAC, dCCA, AmpIT, and AmpPB.

Patients And Methods: Patients after pancreatoduodenectomy for non-pancreatic periampullary adenocarcinoma were identified and collected from 36 tertiary centres between 2010 - 2021.

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Background: Hyperspectral imaging (HSI), combined with machine learning, can help to identify characteristic tissue signatures enabling automatic tissue recognition during surgery. This study aims to develop the first HSI-based automatic abdominal tissue recognition with human data in a prospective bi-center setting.

Methods: Data were collected from patients undergoing elective open abdominal surgery at two international tertiary referral hospitals from September 2020 to June 2021.

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Background: Standard lymphadenectomy for pancreatoduodenectomy is defined for pancreatic ductal adenocarcinoma and adopted for patients with non-pancreatic periampullary cancer (NPPC), ampullary adenocarcinoma (AAC), distal cholangiocarcinoma (dCCA), or duodenal adenocarcinoma (DAC). This study aimed to compare the patterns of lymph node metastases among the different NPPCs in a large series and in a systematic review to guide the discussion on surgical lymphadenectomy and pathology assessment.

Methods: This retrospective cohort study included patients after pancreatoduodenectomy for NPPC with at least one lymph node metastasis (2010-2021) from 24 centers in nine countries.

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  • Hepatocellular carcinoma (HCC) has a poor prognosis, and this study examines the effectiveness of neoadjuvant transarterial chemoembolization (TACE) for large, resectable HCC tumors over 5 cm.
  • In a retrospective analysis of 384 patients, TACE showed no significant impact on disease-free survival or overall survival when compared to surgery alone, even after adjusting for other variables.
  • However, TACE may benefit specific patients, particularly those with very large tumors (≥10 cm), single tumors, or those needing portal vein embolization.
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Background: Spontaneous idiopathic liver hemorrhage (SILH) is a rare life-threatening condition occurring without a clear and specific etiology. A systematic review was performed to provide guidelines for the perioperative management of patients affected by SILH. A case report was also included.

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This international multicenter cohort study included 30 centers. Patients with duodenal adenocarcinoma (DAC), intestinal-type (AmpIT) and pancreatobiliary-type (AmpPB) ampullary adenocarcinoma, distal cholangiocarcinoma (dCCA), and pancreatic ductal adenocarcinoma (PDAC) were included. The primary outcome was 30-day or in-hospital mortality, and secondary outcomes were major morbidity (Clavien-Dindo 3b≥), clinically relevant post-operative pancreatic fistula (CR-POPF), and length of hospital stay (LOS).

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Background: Liver resection is the mainstay for a curative treatment for patients with resectable hepatocellular carcinoma (HCC), also in elderly population. Despite this, the evaluation of patient condition, liver function and extent of disease remains a demanding process with the aim to reduce postoperative morbidity and mortality.

Aim: To identify new perioperative risk factors that could be associated with higher 90- and 180-d mortality in elderly patients eligible for liver resection for HCC considering traditional perioperative risk scores and to develop a risk score.

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Hepatocellular carcinoma is usually detected late and therapeutic options are unsatisfactory. Despite marked progress in patient care, HCC remains among the deadliest cancers world-wide. While surgical resection remains a key option for early-stage HCC, the 5-year survival rates after surgical resection are limited.

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