Portal vein thrombosis refers to complete or partial obstruction of the portal venous system, in the intrahepatic or extrahepatic venous tract or even in the splenic or superior mesenteric veins. This common and potentially fatal condition can develop in various clinical contexts, especially those of liver cirrhosis, hepatocellular carcinoma, and other solid tumors. Certain characteristics, such as the time since the onset of the thrombus (acute or chronic), its biology (hematic or tumoral), the presence of collateral vessels, and the magnetic resonance imaging aspects, are important components of a thorough, careful analysis, as well as informing decisions regarding the appropriate therapeutic strategy. Here, we present a brief review of the anatomy of the portal venous system and a systematic approach to analyzing the condition, using a mnemonic (ABCD, for age, biology, collaterals, and diffusion). We discuss the various imaging methods and illustrate our discussion with images selected from the case files archived at our facility.
Pancreas transplantation is a well-established treatment for patients with complicated diabetes mellitus and advanced renal failure. The most common procedure is simultaneous pancreas-kidney transplantation, in which the pancreas graft is positioned in the right pelvic region and the kidney graft is positioned in the left iliac fossa. Various imaging methods are used for the post-transplantation evaluation of the graft parenchyma and vascular anatomy, as well as for the identification of possible complications. As the number of cases increases, it is fundamental that radiologists understand the surgical procedure and the postoperative anatomy, as well as to recognize the possible postoperative complications and their imaging aspects, with the aim of providing the best guidance in the postoperative management of transplant recipients.
OBJETIVO: Avaliar o estado nutricional de um grupo de escolares da cidade de Petrolina/PE, região do Sertão nordestino, segundo três diferentes critérios, WHO (WORLD HEALTH ORGANIZATION, 1998), Centers for Disease Control and Prevention (KUCZMARSKI et al., 2002) e International Obesity Task Force (COLE et al., 2000), para estabelecer pontos de corte ideais à determinação do estado nutricional na região.MÉTODOS: Estudo correlativo com corte transversal de base escolar, a amostra utilizada foi não probabilística e intencional. Participaram 50 escolares, de ambos os sexos (8,80±0,40 anos), alunos do Ensino Fundamental I, residentes em Petrolina/PE, integrantes das atividades do Programa de Educação Tutorial (PET) – Biomecânica. A avaliação do estado nutricional foi realizada mediante o cálculo do índice de massa corporal (IMC). A comparação dos melhores pontos de corte para o estabelecimento do estado nutricional foi realizada pelos critérios da OMS, do CDC e do IOTF. A concordância entre os indicadores foi avaliada pela estatística de Kappa (k).RESULTADOS: O sobrepeso só foi encontrado junto aos meninos. Obteve-se uma excelente concordância entre os critérios da OMS e do CDC (k=0,882; p<0,001) e valores de concordância regulares entre o IOTF e a OMS (k=0,012; p=0,041) e o IOTF e o CDC (k=0,019; p=0,048).CONCLUSÕES: Os critérios da OMS e do CDC demonstraram ser os mais aptos à avaliação do estado nutricional da população testada, sendo eles análogos aos encontrados em estudos realizados em outras regiões do Brasil.
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