Bile duct cyst type V (Caroli's disease): surgical strategy and results

AbstractBackground. Caroli's disease (CD) is a benign congenital disorder characterized by segmental cystic dilatation of the intrahepatic biliary ducts. Therapeutic strategy includes medical treatment, percutaneous, endoscopic or surgical drainage of the affected bile ducts, liver resection or transplantation. The aim of this study was to analyse the results and long-term follow-up of a consecutive series of patients who underwent surgical treatment for CD. Patients and methods. Between 1995 and 2005, 10 patients were surgically treated for CD. Variables evaluated were: age, gender, clinical presentation, diagnostic procedures, percutaneous and surgical treatments, histopathological analysis and outcome. Results. The average age of the patients was 45.8 years. Recurrent cholangitis was the main clinical manifestation (70%). In unilateral CD a liver resection was performed in nine patients (left lateral sectionectomy in seven, left hepatectomy in one and right hepatectomy in one). In bilateral disease a cholecystectomy, duct exploration, hepaticojejunostomy and liver biopsy of both lobes were performed. Average follow-up was 60 months. All the patients are alive and free of symptoms without recurrence in the remnant liver. Discussion. Liver resection is the preferred therapeutic option for unilateral CD, demonstrating good results in long-term follow-up. In bilateral disease, hepaticojejunostomy could be considered as an alternative or a previous step to liver transplantation, which still remains the ultimate option

Argentina y la integración latinoamericana : bases económicas, bancarias, políticas y sociales

Fil: Cassini, Hernán Eduardo

Produção de aguardente de cana de açucar por celulas imobilizadas

Orientador: Francisco Maugeri FilhoDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de AlimentosMestradoMestre em Engenharia de Alimento

Sulfate and dissolved sulfide variation under low COD/Sulfate ratio in Up-flow Anaerobic Sludge Blanket (UASB) treating domestic wastewater

In this study, the dynamics of sulfate reduction and dissolved sulfide generation (S2-, HS-, H2Saq) in liquid phase was evaluated in an UASB reactor treating domestic wastewater with low COD/Sulfate content. The evaluation in the UASB reactor was performed at three sludge heights (0.25, 1.25, 2.25 taps) and effluent of the reactor. Sulfate reduction was verified in the reactor, with an average reduction of 24 % throughout the experiment period. However, the dissolved sulfide concentration in the reactor was not higher than 5.0 mg Sdiss/L. The kinetic model of first order showed good fit to describe the sulfate reduction under different COD/sulfate ratio, with K1app between 2.94x10-5 s-1 and 1.17x10-5 s-1 with correlation coefficients for data over 91%. The maximum rate to sulfate reduction was 18.0 mg SO42-/L.h-1 and small variation in COD/sulfate ratio promotes a significant change both in sulfate and sulfide concentrations