Publications (7)23.26 Total impact
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Article: Ocular adnexal lymphoma and Helicobacter pylori gastric infection.
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ABSTRACT: There is a causal association between Helicobacter pylori (Hp) gastric infection and the development of gastric MALT lymphoma. In contrast, the link between Hp gastric infection and the development of extragastric lymphoma has not been thoroughly investigated. We, therefore, studied the prevalence of gastric Hp infection at initial diagnosis of ophthalmologic and nonophthalmologic extragastric lymphoma patients. Three cohorts of patients were studied: a first one of 83 patients with OAL, a second one of 101 patients with extraophthalmologic extragastric lymphoma, and a third one of 156 control individuals (control) without malignant lymphoma. Gastric Hp infection was investigated by histopathological analysis and Hp-specific PCR assay on gastric biopsy tissue samples. We found gastric Hp infection in 37 OAL patients (45%), in 25 extraophthalmologic extragastric lymphoma cases (25%), and in 18 controls individuals (12%) (P < 0.0001 OAL/C and P < 0.01 OAL/extra-OAL cases). Gastritis was found in 51% and 9% of Hp-positive and Hp-negative lymphoma patients, respectively (P < 10(-4)). Gastric Hp infection only correlated with MALT/LPL lymphoma (P = 0.03). There is a significant association between gastric Hp infection and MALT/LPL OAL. This suggests a novel mechanism of indirect infection-associated lymphomagenesis whereby chronic local antigen stimulation would lead to the emergence of ectopic B-cell lymphoma.American Journal of Hematology 09/2010; 85(9):645-9. · 4.67 Impact Factor -
Article: Totally laparoscopic right hepatectomy.
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ABSTRACT: Since the first laparoscopic cholecystectomy was performed in 1987, the surgical applications of laparoscopy have grown to involve most areas of general surgery. Until recently, however, major liver surgery remained outside of the scope of minimally invasive surgery. Building on advances in laparoscopic equipment, techniques, and ongoing experience in hepatic surgery, major liver resection has been performed laparoscopically in some select centers. At our institute, a safe and standardized approach to minimally invasive major hepatectomy has been developed. This article illustrates the relevant technical maneuvers in the performance of a totally laparoscopic right hepatectomy. Common pitfalls and areas of concern are discussed. A detailed description of a standardized procedure is presented. The technique was developed from a single-institution experience of 41 laparoscopic right hepatectomies performed in a tertiary care referral center for laparoscopic digestive surgery. The prevention of bleeding and gas embolism are discussed. The laparoscopic right hepatectomy is feasible and safe if the appropriate expertise and equipment are available. In selected patients, this new approach can be proposed by a surgeon experienced in laparoscopic and hepatic surgery as an alternative to conventional open liver resection.American journal of surgery 12/2007; 194(5):685-9. · 2.36 Impact Factor -
Article: [Morbidity/mortality reviews: assessment of their implementation in one hospital].
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ABSTRACT: The objective of this study was to describe the steps involved in establishing a morbidity/mortality review committee (MMRC) to analyze the causes of avoidable deaths or life-threatening complications and the development of plans and protocols to avoid their recurrence. The MMRC included physicians from each hospital department. Each member was responsible for organizing departmental meetings to analyze its avoidable deaths and life-threatening complications. During its meetings three times a year, the MMRC developed a method for analysis of these serious events. Each department organized 3 (range: 1-12) meetings a year and analyzed 1-3 cases at each. Over 30 months, 35,817 patients were admitted to the hospital and 341 (1%) died. The unexpected mortality rate varied by department and specialty (median: 27%, range: 6-65%). In all, 92 cases were referred to MMRC meetings (27%; range: 6-70% of hospital deaths), and 30% of them involvement nosocomial diseases. Heart disease was the primary cause of unexpected deaths. The principal improvements involved medical and surgical strategies, surgical techniques, drug prescriptions, and patient monitoring.La Presse Médicale 10/2006; 35(9 Pt 1):1223-30. · 0.67 Impact Factor -
Article: Pre-operative predictive factors of early recurrence after resection of adenocarcinoma of the esophagus and cardia.
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ABSTRACT: To determine pre-operative predictive factors of early recurrence in patients with esophageal and cardial adenocarcinoma. We retrospectively analyzed consecutive patients who underwent resection for esophageal and cardial adenocarcinoma in our institution between October 1992 and October 2001. Patient files were studied and classified according to the occurrence of early recurrence (within one year) (group A) and patients without recurrence (group B). Pre-operative clinical, biological and radiological parameters were recorded. Both groups were compared in univariate and multivariate analysis. One hundred patients underwent surgical resection. Tumor was located in lower esophagus in 71 cases and at the cardia in 29 cases. R0 resection was feasible in 95 cases. Hospital mortality was 2%. Survival rate at 3 years was 56%. Recurrence before 1 year occurred in 28 patients (group A) and not in 72 (group B). In univariate analysis, younger age (P=0.01), dysphagia (P=0.04) and percentage of weight loss (P<0.0004) were significantly different between both groups. Weight loss more than 10% was observed in 2 patients of group B, and in 9 patients of group A. In multivariate analysis, weight loss more than 10% was the only pre-operative factor associated with early recurrence (P=0.018). Important weight loss could be a pre-operative predictive factor of early recurrence after resection of esophageal and cardial adenocarcinoma and surgery as first line treatment could be avoided in these patients.Gastroentérologie Clinique et Biologique 12/2005; 29(12):1275-8. · 0.80 Impact Factor -
Article: [Splenic infarctus: a rare complication of pancreatic adenocarcinoma].
Gastroentérologie Clinique et Biologique 02/2005; 29(1):83-4. · 0.80 Impact Factor -
Article: Noninvasive assessment of liver fibrosis by measurement of stiffness in patients with chronic hepatitis C.
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ABSTRACT: Liver fibrosis is the main predictor of the progression of chronic hepatitis C, and its assessment by liver biopsy (LB) can help determine therapy. However, biopsy is an invasive procedure with several limitations. A new, noninvasive medical device based on transient elastography has been designed to measure liver stiffness. The aim of this study was to investigate the use of liver stiffness measurement (LSM) in the evaluation of liver fibrosis in patients with chronic hepatitis C. We prospectively enrolled 327 patients with chronic hepatitis C in a multicenter study. Patients underwent LB and LSM. METAVIR liver fibrosis stages were assessed on biopsy specimens by 2 pathologists. LSM was performed by transient elastography. Efficiency of LSM and optimal cutoff values for fibrosis stage assessment were determined by a receiver-operating characteristics (ROC) curve analysis and cross-validated by the jack-knife method. LSM was well correlated with fibrosis stage (Kendall correlation coefficient: 0.55; P < .0001). The areas under ROC curves were 0.79 (95% CI, 0.73-0.84) for F > or =2, 0.91 (0.87-0.96) for F > or =3, and 0.97 (0.93-1) for F=4; for larger biopsies, these values were, respectively, 0.81, 0.95, and 0.99. Optimal stiffness cutoff values of 8.7 and 14.5 kPa showed F > or =2 and F=4, respectively. In conclusion, noninvasive assessment of liver stiffness with transient elastography appears as a reliable tool to detect significant fibrosis or cirrhosis in patients with chronic hepatitis C.Hepatology 02/2005; 41(1):48-54. · 11.66 Impact Factor -
Article: Transient elastography: a new noninvasive method for assessment of hepatic fibrosis.
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ABSTRACT: Chronic hepatitis is accompanied by progressive deposit of hepatic fibrosis, which may lead to cirrhosis. Evaluation of liver fibrosis is, thus, of great clinical interest and, up to now, has been assessed with liver biopsy. This work aims to evaluate a new noninvasive device to quantify liver fibrosis: the shear elasticity probe or fibroscan. This device is based on one-dimensional (1-D) transient elastography, a technique that uses both ultrasound (US) (5 MHz) and low-frequency (50 Hz) elastic waves, whose propagation velocity is directly related to elasticity. The intra- and interoperator reproducibility of the technique, as well as its ability to quantify liver fibrosis, were evaluated in 106 patients with chronic hepatitis C. Liver elasticity measurements were reproducible (standardized coefficient of variation: 3%), operator-independent and well correlated (partial correlation coefficient = 0.71, p < < 0.0001) to fibrosis grade (METAVIR). The areas under the receiver operating characteristic (ROC) curves were 0.88 and 0.99 for the diagnosis of patients with significant fibrosis (>/= F2) and with cirrhosis ( = F4), respectively. The Fibroscan is a noninvasive, painless, rapid and objective method to quantify liver fibrosis.Ultrasound in Medicine & Biology 12/2003; 29(12):1705-13. · 2.29 Impact Factor
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Institutions
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2005–2010
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Institute Mutualiste Montsouris
Paris, Ile-de-France, France
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