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Sainte-Foy-lès-Lyon, France

Le Moigne F.,La Croix Rousse Hospital | Durieux M.,La Croix Rousse Hospital | Bancel B.,La Croix Rousse Hospital | Boublay N.,Hospices Civils de Lyon | And 4 more authors.
Magnetic Resonance Imaging

Purpose: The purpose of this study was to determine whether or not adding diffusion-weighted magnetic resonance imaging (DWI) to conventional magnetic resonance (MR) imaging sequences improves the characterization of small hepatocellular carcinoma (HCC) (≤2 cm) in the setting of cirrhotic liver compared to conventional sequences alone. Materials and Methods: A total of 62 cirrhotic liver patients with 82 nodules smaller than 2 cm in diameter were enrolled, and all lesions were pathologically confirmed. For the first reading session, which included precontrast T1- and T2-weighted images and T1 dynamic contrast-enhanced images, preindicated lesions by a study coordinator were characterized by two radiologists. They determined the confidence levels in consensus for the presence of small HCC into four grades. In another session, respiratory-triggered diffusion-weighted MR images (b factor=50, 400 and 800 s/mm 2) were added to the previously reviewed images, and the same two radiologists again determined the confidence levels. The diagnostic performance of the combined DWI-conventional sequences set and the conventional sequences alone set was evaluated using receiver operating characteristic curves. Sensitivity and specificity values for characterizing small HCCs were also calculated. Results: The area under the receiver operating characteristic curve for the second interpretation session (0.86) was significantly higher (P=.038) than that of the first session (0.76). The sensitivity was significantly increased from 75.7% to 87.8% by adding DWI to the conventional sequences (P=.015). No significant differences were observed for specificity values. Conclusion: Adding DWI to conventional imaging modalities improves the diagnosis of small HCCs in the cirrhotic liver in terms of diagnostic performance and sensitivity by increasing reader confidence. © 2012 Elsevier Inc. Source

Ouaissi M.,Timone Hospital | Kianmanesh R.,Robert Debre Hospital | Belghiti J.,Beaujon Hospital | Ragot E.,Beaujon Hospital | And 12 more authors.
Annals of Surgery

Objective: The purpose of the study was to analyze clinical presentation, surgical management, and long-term outcome of patients suffering from biliary diverticulum, namely Todani type II congenital bile duct cyst (BDC). Background: The disease incidence ranges between 0.8% and 5% of all reported BDC cases with a lack of information about clinical presentation, management, and outcome. Methods: A multicenter European retrospective study was conducted by the French Surgical Association. The patients' medical records were included in a Web site database. Diagnostic imaging studies, operative and pathology reports underwent central revision. Results: Among 350 patients with congenital BDC, 19 type II were identified (5.4%), 17 in adults (89.5%) and 2 in children. The biliary diverticulum was located at the upper, middle, and lower part of the extrahepatic biliary tree in 11, 4, and 4 patients (58%, 21%, and 21%, respectively). Complicated presentation occurred in 6 patients (31.6%), including one case of synchronous carcinoma. Surgical techniques included diverticulum excision in all patients. Associated resection of the extrahepatic biliary tree was required in 11 cases (58%) and could be predicted by the presence of complicated clinical presentation. There was no mortality. Long-term outcome was excellent in 89.5% of patients (median follow-uptime: 52 months). Conclusions: According to the present largest Western series of Todani type II BDC, the type of clinical presentation rather than BDC location, was able to guide the extent of biliary resection. Excellent long-term outcome can be achieved in expert centers. Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved. Source

Ancel P.-Y.,University of Paris Pantheon Sorbonne | Ancel P.-Y.,University of Paris Descartes | Ancel P.-Y.,Clinical Research Unit | Goffinet F.,University of Paris Pantheon Sorbonne | And 64 more authors.
JAMA Pediatrics

Importance: Up-to-date estimates of the health outcomes of preterm children are needed for assessing perinatal care, informing parents, making decisions about care, and providing evidence for clinical guidelines.Objectives: To determine survival and neonatal morbidity of infants born from 22 through 34 completed weeks' gestation in France in 2011 and compare these outcomes with a comparable cohort in 1997.Design, Setting, And Participants: The EPIPAGE-2 study is a national, prospective, population-based cohort study conducted in all maternity and neonatal units in France in 2011. A total of 2205 births (stillbirths and live births) and terminations of pregnancy at 22 through 26 weeks' gestation, 3257 at 27 through 31 weeks, and 1234 at 32 through 34 weeks were studied. Cohort data were collected from January 1 through December 31, 1997, and from March 28 through December 31, 2011. Analyses for 1997 were run for the entire year and then separately for April to December; the rates for survival and morbidities did not differ. Data are therefore presented for the whole year in 1997 and the 8-month and 6-month periods in 2011.Main Outcomes And Measures: Survival to discharge and survival without any of the following adverse outcomes: grade III or IV intraventricular hemorrhage, cystic periventricular leukomalacia, severe bronchopulmonary dysplasia, retinopathy of prematurity (stage 3 or higher), or necrotizing enterocolitis (stages 2-3).Results: A total of 0.7%of infants born before 24 weeks' gestation survived to discharge: 31.2%of those born at 24 weeks, 59.1%at 25 weeks, and 75.3%at 26 weeks. Survival rates were 93.6%at 27 through 31 weeks and 98.9%at 32 through 34 weeks. Infants discharged home without severe neonatal morbidity represented 0% at 23 weeks, 11.6%at 24 weeks, 30.0%at 25 weeks, 47.5%at 26 weeks, 81.3%at 27 through 31 weeks, and 96.8%at 32 through 34 weeks. Compared with 1997, the proportion of infants surviving without severe morbidity in 2011 increased by 14.4%(P < .001) at 25 through 29 weeks and 6%(P < .001) at 30 through 31 weeks but did not change appreciably for those born at less than 25 weeks. The rates of antenatal corticosteroid use, induced preterm deliveries, cesarean deliveries, and surfactant use increased significantly in all gestational-age groups, except at 22 through 23 weeks.Conclusions And Relevance: The substantial improvement in survival in France for newborns born at 25 through 31 weeks' gestation was accompanied by an important reduction in severe morbidity, but survival remained rare before 25 weeks. Although improvement in survival at extremely low gestational agemay be possible, its effect on long-term outcomes requires further studies. The long-term results of the EPIPAGE-2 study will be informative in this regard. © 2015 American Medical Association. All rights reserved. Source

Le Moigne F.,Desgenettes Military Teaching Hospital | Boussel L.,La Croix Rousse Hospital | Haquin A.,La Croix Rousse Hospital | Bancel B.,La Croix Rousse Hospital | And 3 more authors.
British Journal of Radiology

Methods: 51 cirrhotic patients with 63 histologically proven HCCs ≤2 cm underwent abdominal MRI, including DWI (b-values 50, 400 and 800smm-2) and T2 weighted sequences. HCCs were classified into well-differentiated HCCs (n=37) and moderately differentiated HCCs (n=26). Relative contrast ratios (RCRs) between the lesions and the surrounding liver were performed and compared between the two groups for T2 weighted images, each b-value and apparent diffusion coefficients (ADCs). A receiver operating characteristic (ROC) analysis was performed to compare RCRs in T2 and diffusion-weighted images.Conclusion: The RCR measurement performed in DWI 50, 400 and 800 b-values and T2 demonstrated a significant difference between well-differentiated and moderately differentiated small-sized HCCs. Furthermore, no difference was shown by using either ADC or ADC RCR.Advances in knowledge: DWI with RCR measurement may be a valuable tool for non-invasively predicting the histological grade of small HCCs.Results: We found significant differences in RCRs between well-differentiated vs moderately differentiated HCCs for b550, 400 and 800smm-2 and T2 weighted images (1.35±0.36 vs 1.86±0.62; 1.35±0.38 vs 1.82± 0.60; 1.27±0.30 vs 1.74±0.53; 1.14±0.18 vs 1.43±0.28, respectively; p<0.001), whereas no significant differences were observed in ADC and ADC RCR (1.05±0.19 vs 0.99±0.15 and 1.160.22 vs 1.09±0.23; p=0.16 and p=0.82, respectively). No significant difference was found in the areas under the ROC curve for RCRs of T2 weighted images and every DWI b-value (p=0.18).Objective: To evaluate the capacity of diffusion-weighted imaging (DWI) to determine the histological grade of small-sized hepatocellular carcinomas (HCCs) in liver cirrhosis in comparison with T2 weighted imaging. © 2014 The Authors. Source

Ouaissi M.,Timone Hospital | Kianmanesh R.,Robert Debre Hospital | Ragot E.,Beaujon Hospital | Belghiti J.,Beaujon Hospital | And 87 more authors.

Aim To compare clinical presentation, operative management and short- and long-term outcomes of congenital bile duct cysts (BDC) in adults with children. Methods Retrospective multi-institutional Association Francaise de Chirurgie study of Todani types I+IVB and IVA BDC. Results During the 37-year period to 2011, 33 centers included 314 patients (98 children; 216 adults). The adult population included more high-risk patients, with more active, more frequent prior treatment (47.7% vs 11.2%; p < 0.0001), more complicated presentation (50.5% vs 35.7%; p = 0.015), more synchronous biliary cancer (11.6% vs 0%; p = 0.0118) and more major surgery (23.6% vs 2%; p < 0.0001), but this latter feature was only true for type I+IVB BDC. Compared to children, the postoperative morbidity (48.1% vs 20.4%; p < 0.0001), the need for repeat procedures and the status at follow-up were worse in adults (27% vs 8.8%; p = 0.0009). However, severe postoperative morbidity and fair or poor status at follow-up were not statistically different for type IVA BDC, irrespective of patients' age. Synchronous cancer, prior HBP surgery and Todani type IVA BDC were independent predictive factors of poor or fair long-term outcome. Conclusion BDC is a more indolent disease in children compared to adults, except for Todani type IV-A BDC. © 2016 International Hepato-Pancreato-Biliary Association Inc. Published by Elsevier Ltd. All rights reserved. Source

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