ABSTRACT
Abstract Objective: This study aimed to estimate the performance of single-phase-enhanced computed tomography and ultrasonography examinations in the preoperative evaluation of solid abdominal tumors and their relationship with relevant adjacent structures in children. Methods: This retrospective study included 50 pediatric patients with malignant solid abdominal tumors treated with surgical resection between 2009-2017. Preoperative computed tomography and ultrasonography were compared to operative findings (gold standard) in the diagnosis of invasion or encasement of adjacent structures. Accuracy, sensitivity, specificity, and positive and negative predictive values were evaluated. Results: Renal (20.4%) and neuroblastic (19.4%) tumors were the most common. Complete surgical resection with negative margins was achieved in 44 (88%) patients. The comparison between single-phase-enhanced computed tomography and ultrasonography findings showed the following results: sensitivity = 90.3% vs 86.6%, specificity = 86.8% vs 94.6%, negative predictive value = 95.3% vs 94.4%, positive predictive value = 75.3% vs 86.9%, and accuracy = 87.9% vs 92.2%. The correlation (kappa index) between computed tomography and ultrasonography examinations was 0.72 (p < 0.001). In 14% (7/50) of the patients, the invasion of adjacent structures was diagnosed by ultrasonography but not by computed tomography (1 patient had 2 invaded structures).
ABSTRACT
A baixa mortalidade de esquimos por coronariopatia, tem sido relacionada a alta quantidade de peixe que eles consomem. A adicao do acido eicosapentanoico, um oleo de peixe marinho, na dieta humana, mostra a producao de metabolitos que sao menos potentes que seus assemelhados derivados do acido araquidonico. Devido as diferentes atividades funcionais destes eicosanoides, muitas pesquisas estao sendo feitas com outras patologias. O objetivo desta revisao e mostrar alguns trabalhos e resultados com o uso destas substancias.