Publications by authors named "Georges Mantion"

Alveolar echinococcosi. Alveolar echinococcosis is a parasitic anthropo-zoonosis which looks like a slow-growing liver cancer. The lesions progressively obstruct hepatic vessels and bile ducts and invade neighboring organs, and it may metastasize to the lung and the brain and possibly all distant organs.

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Background: This document is a summary of the French Intergroup guidelines regarding the management of gastrointestinal stromal tumours (GISTs) updated in December 2018.

Design: This collaborative work summarizes clinical practice recommendations (guidelines) on the management of GISTs. It is based on recent literature review, ESMO recommendations and expert opinions.

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Background: Recurrence and distant metastases remain a significant issue in locally advanced rectal cancer (LARC). Several multimodal strategies are assessed in clinical trials.

Patients And Methods: Patients with mid/low magnetic resonance imaging-defined high-risk LARC were randomized to arm A (12-week bevacizumab + FOLFOX-4 then bevacizumab-5-fluorouracil [5-FU]-radiotherapy [RT] before total mesorectal excision [TME]) or arm B (bevacizumab-5-FU-RT then TME).

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The use of various types of invasive interventions combined with anti-infective drugs in the therapeutic strategy of alveolar echinococcosis (AE) has changed during the last 30 years. Areas covered: This article reviews the current respective indications of surgical, percutaneous and perendoscopic interventions in AE and proposes an integrative therapeutic strategy. Expert commentary: Hepatic resection is indicated whenever it is feasible and curative; palliative surgery should be avoided; percutaneous procedures are best adapted to the drainage of the necrotic cavity present in advanced cases; perendoscopic procedures with stenting are best adapted to alleviating the biliary complications that are common and life-threatening in AE patients.

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Few data are available regarding emergency surgery for Crohn's disease (CD) during pregnancy. A 22-year -old woman, at 26 weeks of pregnancy, was admitted for premature labour, intestinal obstruction and systemic inflammation. Biology and ultrasonography were not helpful; imaging was completed with a CT scan, which confirmed the mechanical ileal obstruction.

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Background: Chronic inflammation is a key feature of colorectal cancer (CRC), meaning that inflammatory biomarkers may be useful for its diagnosis. In particular, high neutrophil gelatinase-associated lipocalin (NGAL) expression has been reported in CRC. Thus, we investigated whether serum NGAL and NGAL/MMP-9 could be potential biomarkers for the early detection of CRC.

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In 2011 and 2012, liver infections caused by Echinococcus ortleppi tapeworms were diagnosed in 2 humans in France. In 2012, a nationwide slaughterhouse survey identified 7 E. ortleppi infections in cattle.

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Purpose: Actual 5-year survival rates after resection of colorectal liver metastases (CLM) are 25-45%, whereas 10-year survival rates are extrapolated from survival curves. Few studies have reported long-term survivors with 10 years of actual follow-up. Therefore, no recurrences occurring after 10-plus years have been reported.

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Introduction: As mortality and morbidity after a curative resection remains high, it is essential to identify pre-operative factors associated with an early death after a major resection.

Methods: Between 1998 and 2008, we selected a population of 331 patients having undergone a major hepatectomy including segment I with a lymphadenectomy and a common bile duct resection for a proven hilar cholangiocarcinoma in 21 tertiary centres. The study's objective was to identify pre-operative predictors of early death (<12 months) after a resection.

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Objective: The purpose of this study was to assess outcomes and indications in a large cohort of patients who underwent liver transplantation (LT) for liver metastases (LM) from neuroendocrine tumors (NET) over a 27-year period.

Background: LT for NET remains controversial due to the absence of clear selection criteria and the scarcity and heterogeneity of reported cases.

Methods: This retrospective multicentric study included 213 patients who underwent LT for NET performed in 35 centers in 11 European countries between 1982 and 2009.

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Alveolar echinococcosis (AE) is characterized by the development of irreversible fibrosis and of immune tolerance towards Echinococcus multilocularis (E. multilocularis). Very little is known on the presence of transforming growth factor-β (TGF-β) and other components of TGF-β/Smad pathway in the liver, and on their possible influence on fibrosis, over the various stages of infection.

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Hepatic epithelioid hemangioendothelioma is a rare liver mesenchymatous tumor with an epithelial aspect developed from endothelial cells with a lack of validated therapeutic options at metastatic stage. Metronomic chemotherapy has been described as an anti-angiogenic therapy leading to the depletion of circulating endothelial progenitors. We report the results of two patients treated for metastatic hemangioendothelioma with metronomic cyclophosphamide chemotherapy.

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We report the 30-yr history of a well-documented human case of alveolar echinococcosis, with a lung lesion at presentation followed by the discovery of a liver lesion, both removed by surgery. Subsequently, within the 13 years following diagnosis, metastases were disclosed in eye, brain and skull, as well as additional lung lesions. This patient had no immune suppression, and did not have the genetic background known to predispose to severe alveolar echinococcosis; it may thus be hypothesized that iterative multi-organ involvement was mostly due to the poor adherence to benzimidazole treatment for the first decade after diagnosis.

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Background & Aims: The role of liver transplantation in the treatment of hepatocellular carcinoma in livers without fibrosis/cirrhosis (NC-HCC) is unclear. We aimed to determine selection criteria for liver transplantation in patients with NC-HCC.

Methods: Using the European Liver Transplant Registry, we identified 105 patients who underwent liver transplantation for unresectable NC-HCC.

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Background: Alveolar echinococcosis (AE) is characterized by the tumor-like growth of Echinococcus (E.) multilocularis. Very little is known on the influence of helminth parasites which develop in the liver on the proliferation/growth arrest metabolic pathways in the hepatocytes of the infected liver over the various stages of infection.

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Liver transplantation (LT) is currently contraindicated in patients with residual or metastatic alveolar echinococcosis (AE) lesions. We evaluated the long-term course of such patients who underwent LT and were subsequently treated with benzimidazoles. Clinical, imaging, serological, and therapeutic data were collected from 5 patients with residual/recurrent AE lesions who survived for more than 15 years.

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Background & Aims: Alveolar echinococcosis (AE) is a rare disease in humans, caused by the larval stage of the fox tapeworm Echinococcus multilocularis.

Methods: We present here 387 detailed AE cases diagnosed in France from 1982 to 2007 actively identified by a retrospective survey performed in 1997-1998 and prospectively thereafter.

Results: Male:female ratio was 1.

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Background: Alveolar echinococcosis (AE) is a severe chronic parasitic disease which behaves like a slow-growing liver cancer. Clinical observations suggest that the parasite, Echinococcus multilocularis (E. multilocularis) influences liver homeostasis and hepatic cell metabolism.

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Background: The aim of this multicenter, randomized, prospective study was to reveal a difference in terms of a guided healing period in the case of stoma orifices after reestablishing digestive continuity by comparing an alginate mesh with a polyvidone iodine mesh.

Methods: Between April 2004 and September 2005, a total of 73 patients were randomized into two groups: A (alginate mesh) and M (polyvidone iodine mesh). The groups were comparable for demographic data, indications for and the type of stoma, and perioperative data.

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Acute graft-versus-host disease (GVHD) following orthotopic liver transplantation is a rare but severe disease with a 75% death rate in adults. Various therapeutic strategies have been proposed for steroid-refractory GVHD, but there is still no consensus. Tumor necrosis factor-alpha is a key inflammatory cytokine involved in acute GVHD physiopathology, and infliximab has shown encouraging results for the treatment of acute GVHD following hematopoietic stem cell transplantation.

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The aim of the current work was to harmonise protocols between three laboratories by performing independent isolations and cultures of human hepatocytes and to assess their responses to prototypical cytochrome P450 (CYP) enzyme inducers, beta-naphthoflavone (BNF), rifampicin (RIF) or phenobarbital (PB). The magnitudes of the induction responses were CYP and donor-dependent but there was a good reproducibility between laboratories. CYP1A2 activity was evident in all cultures treated with BNF but not RIF or PB.

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We have compared induction responses of human hepatocytes to known inducers of CYP1A2, CYP2B6, CYP2C and CYP3A4/5 to determine whether the culture format, treatment regimen and/or substrate incubation conditions affected the outcome. CYP induction responses to prototypical inducers were equivalent regardless of pre-culture time (24h or 48h), plate format (60mm or 24-well plates) used or whether CYP activities were measured in microsomes or whole cell monolayers. Fold-induction of CYP3A4/5 by 1000muM PB and 10microM RIF were equivalent.

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