RESUMO
We prospectively assessed contrast-enhanced sonography for evaluating the degree of liver fibrosis as diagnosed via biopsy in 99 patients. The transit time of microbubbles between the portal and hepatic veins was calculated from the difference between the arrival time of the microbubbles in each vein. Liver biopsy was obtained for each patient within 6 months of the contrast-enhanced sonography. Histological fibrosis was categorized into two classes: (1) no or moderate fibrosis (F0, F1, and F2 according to the METAVIR staging) or (2) severe fibrosis (F3 and F4). At a cutoff of 13 s for the transit time, the diagnosis of severe fibrosis was made with a specificity of 78.57%, a sensitivity of 78.95%, a positive predictive value of 78.33%, a negative predictive value of 83.33%, and a performance accuracy of 78.79%. Therefore, contrast-enhanced ultrasound can help with differentiation between moderate and severe fibrosis.
Assuntos
Algoritmos , Biópsia , Aumento da Imagem/métodos , Interpretação de Imagem Assistida por Computador/métodos , Cirrose Hepática/diagnóstico , Fosfolipídeos , Hexafluoreto de Enxofre , Ultrassonografia/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Meios de Contraste , Feminino , França , Humanos , Cirrose Hepática/classificação , Masculino , Pessoa de Meia-Idade , Variações Dependentes do Observador , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Adulto JovemRESUMO
The diagnosis of an abdominal mass using imaging techniques is difficult for clinicians and radiologists. We report a case of an atypical peripancreatic mass, mimicking a carcinoma on abdominal computed tomography and which was only diagnosed after an echoendoscopic biopsy of the mass was performed. It is difficult to differentiate abdominal tuberculosis from a neoplasm, especially if there is no pulmonary tuberculosis. Usually, the diagnosis of abdominal tuberculosis is only confirmed histologically, after surgical resection of the mass. Echoendoscopic biopsy confirmed the infectious nature of the mass and prevented complicated and difficult surgery.
Assuntos
Biópsia/métodos , Endossonografia/métodos , Pancreatopatias/diagnóstico por imagem , Tuberculoma/diagnóstico por imagem , Tuberculose dos Linfonodos/diagnóstico por imagem , Ultrassonografia de Intervenção/métodos , Adulto , Carcinoma/diagnóstico , Diagnóstico Diferencial , Humanos , Masculino , Pancreatopatias/microbiologia , Neoplasias Pancreáticas/diagnóstico , Radiografia Abdominal , Tomografia Computadorizada por Raios XRESUMO
The aim of this paper is to report the mammographic predictive positive value by decade of age using the assessment categories described within the BI-RADS lexicon.