Mariza Leitão Valadares Roquete

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OBJECTIVE To review the literature on portal vein thrombosis in children and adolescents, focusing on its diagnosis, complications and treatment. SOURCES OF DATA The medical literature of the past 10 years was reviewed using the PubMed and MEDLINE search engines, with major focus on portal vein thrombosis and its clinical outcomes. The following keywords(More)
OBJECTIVE To evaluate the effects of treatment on liver histopathology of children and adolescents diagnosed with autoimmune hepatitis. PATIENTS AND METHODS Histopathological evaluation of liver biopsies performed at diagnosis or early during treatment, compared with biopsies after immunosuppressive treatment of 20 children and adolescents diagnosed with(More)
OBJECTIVE The aim of this study was to evaluate the clinical, laboratory and histopathological characteristics and the response to immunosuppression in children and adolescents with autoimmune hepatitis (AIH). METHODS The present research is a descriptive study consisting of 39 children and adolescents with AIH who receive care at the Department of(More)
OBJECTIVES To describe the hepatic abnormalities revealed by ultrasound examination of cystic fibrosis (CF) patients followed at the CF Outpatient Clinic at the Federal University of Minas Gerais; to compare ultrasound data with clinical and biochemical parameters; to validate the Williams ultrasound score for the diagnosis of liver disease in CF. METHODS(More)
CONTEXT Portal vein thrombosis refers to a total or partial obstruction of the blood flow in this vein due to a thrombus formation. It is an important cause of portal hypertension in the pediatric age group with high morbidity rates due to its main complication - the upper gastrointestinal bleeding. OBJECTIVE To describe a group of patients with portal(More)
OBJECTIVES To define the sensitivity, specificity and accuracy of the ultrasound triangular cord sign and hepatic histopathology, in isolation or in combination, for diagnostic differentiation between biliary atresia and intrahepatic cholestasis. METHODS This was a retrospective study carried out between January 1990 and December 2004. Fifty-one cases of(More)
OBJECTIVES To determine the clinical and laboratory parameters that may predict the presence of esophageal varices in children and adolescents with portal hypertension. PATIENTS AND METHODS Overall, 111 patients with portal hypertension and no previous history of digestive bleeding underwent esophagogastroduodenoscopy for detection of esophageal varices.(More)
PURPOSE To study hepatic lesions in living children with sickle cell disease. Although such lesions are well known, the possibility of chronic persistent damage to the parenchyma resulting from the disease itself or iron overload is controversial. PATIENTS AND METHODS Sixteen children with sickle cell disease aged 15 months to 18 years were prospectively(More)
OBJECTIVES To evaluate the first 10 years' experience of the liver transplantation department at the Alfa Institute, Hospital das Clínicas da Universidade Federal de Minas Gerais, Brazil. METHODS A descriptive study, based on a retrospective analysis of 84 children and adolescents enrolled on a liver transplantation waiting list, from March 1995 to(More)