RESUMO
Introduction: Hepatic resection is the standard treatment for the liver tumors and in most cases the only potentially curative option. The most feared complication, in the major hepatic resection, is the postoperative liver failure. A new technique has recently been published in the literature: Liver partition associated to a portal vein ligation for staged hepatectomy. This technique allows an accelerated hipertrophy of the remnant liver, facilitates greater resection surgery, reducing the risk of postoperative hepatic ischemia. The results reported in the literature are promising. We report the first case in Chile with its evolution to 2 years and a discussion about the topic.
La resección hepática es el tratamiento estándar para los tumores hepáticos malignos y en la mayoría de los casos la única opción potencialmente curativa. La complicación más temida, en las grandes resecciones, es la insuficiencia hepática postquirúrgica. Una nueva técnica ha sido recientemente publicada en la literatura: La partición hepática asociada a la ligadura de la vena portal para realizar una hepatectomía por etapas. Esta técnica permite una hipertrofia acelerada del hígado remanente que posibilita una cirugía resectiva mayor, disminuyendo el riesgo de isquemia hepática postquirúrgica. Los resultados expuestos en la literatura son promisorios. Presentamos el primer caso clínico en Chile con su evolución a 2 años y una discusión del tema.
Assuntos
Humanos , Adulto , Feminino , Hepatectomia/métodos , Regeneração Hepática , Neoplasias Hepáticas/cirurgia , Veia Porta/cirurgia , LigaduraRESUMO
Liver metastasis of colon cancer is a very common clinical entity. Resective surgery can be used to improve the overall survival and disease-free. The problem is that major resections are associated with hepatic failure caused by an inadequate residual volume. Chemotherapy with diagrams as FOLFOX, FOLFIRI associated with antibodies such as bevacizumab, cetuximab or panitumumable added an important role in the conversion of unresectable to resectable tumors. Another widely used technique is portal vein ligation in a first surgical procedure, that generates left hepatic growth, to perform the resection in a second surgical procedure. The liver hypertrophy is achieved in a period of 2 months. The latest new technical procedure is the association of the ligation portal to the liver partition of the hepatic parenchyma without resection, which allows a segmental hypertrophy of the liver remnant between 7 to 10 days. This technique is called ALPPS. Radiofrecuency also has a role in the treatment of liver metastases. However,it is secondary.
La metástasis hepáticas del cáncer de colon es una entidad clínica muy frecuente. La cirugía resectiva permite mejorar la sobrevida global y libre de enfermedad. El problema es que grandes resecciones se asocian a insuficiencia hepática por un inadecuado volumen residual. La quimioterapia con esquemas como FOLFOX, FOLFIRI asociada a anticuerpos como bevacizumab, cetuximab o panitumumable agregan un rol importante en la conversión de tumores irresecables a resecables. Otra técnica utilizada es la ligadura portal en un primer tiempo, que genera crecimiento hepático izquierdo, para realizar la resección en un segundo tiempo quirúrgico. La hipertrofia hepática se logra en un período de 2 meses. La última novedad técnica es la asociación de la ligadura portal a la transección del parénquima hepático sin resección, lo que permite una hipertrofia segmentaria del hígado remanente entre 7 a 10 días. Esta técnica se denomina ALPPS. La radiofrecuencia también tiene un rol en el tratamiento de las metástasis hepáticas, aunque este es secundario.
Assuntos
Humanos , Neoplasias Hepáticas/cirurgia , Neoplasias Hepáticas/secundário , Neoplasias do Colo/patologia , Terapia Combinada , Hepatectomia/métodos , Neoplasias Hepáticas/tratamento farmacológico , Neoplasias Hepáticas/radioterapia , Ondas de RádioRESUMO
Ischemia-reperfusion (IR) liver injury is associated with temporary clamping of hepatoduodenal ligament during liver surgery, hypoperfusion shock and graft failure after liver transplantation. Mechanisms of IR liver injury include: i) loss of calcium homeostasis, ii) reactive oxygen and nitrogen species generation, iii) changes in microcirculation, iv) Kupffer cell activation, and (v) complement activation. Pre-exposure of the liver to transient ischemia increases the tolerance to IR injury, a phenomenon known as hepatic ischemic preconditioning (IP). IP involves: i) recovery of the energy supply and calcium, sodium and pH homeostasis, ii) enhancement in the antioxidant potential, and iii) expression of multiple stress-response proteins, including acute phase proteins, heat shock proteins, and heme oxygenase. These observations and preliminary studies in humans give a rationale for the assessment of IP in minimizing or preventing IR injury during surgery and non surgical conditions of tissue hypoperfusion.
Assuntos
Precondicionamento Isquêmico/métodos , Fígado/irrigação sanguínea , Espécies Reativas de Oxigênio/metabolismo , Traumatismo por Reperfusão/patologia , Expressão Gênica , Humanos , Fígado/metabolismo , Fígado/patologia , Transplante de Fígado , Microcirculação , Ácido Nítrico/metabolismo , Estresse Oxidativo , Traumatismo por Reperfusão/genética , Traumatismo por Reperfusão/metabolismoRESUMO
Ischemia-reperfusion (IR) liver injury is associated with temporary clamping of hepatoduodenal ligament during liver surgery, hypoperfusion shock and graft failure after liver transplantation. Mechanisms of IR liver injury include: i) loss of calcium homeostasis, ii) reactive oxygen and nitrogen species generation, iii) changes in microcirculation, iv) Kupffer cell activation, and (v) complement activation. Pre-exposure of the liver to transient ischemia increases the tolerance to IR injury, a phenomenon known as hepatic ischemic preconditioning (IP). IP involves: i) recovery of the energy supply and calcium, sodium and pH homeostasis, ii) enhancement in the antioxidant potential, and iii) expression of multiple stress-response proteins, including acute phase proteins, heat shock proteins, and heme oxygenase. These observations and preliminary studies in humans give a rationale for the assessment of IP in minimizing or preventing IR injury during surgery and non surgical conditions of tissue hypoperfusion.
