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1.
Chin Clin Oncol ; 7(5): 53, 2018 Oct.
Article in English | MEDLINE | ID: mdl-30180752

ABSTRACT

Intrahepatic cholangiocarcinoma (ICC) is the second most common primary hepatic malignant tumor and its incidence is increasing over the world. At present times, radical liver resection is still the most effective treatment for ICC patients to achieve long term survival. Pathological lymph node metastases (LMN), found in 15% to 45% of the patients, have been recognized as an extremely poor prognostic risk factor, even if curative resection is performed. So, considering this issue, it acquires relevance to determine the validity of surgical resection for LNM cases that are diagnosed in the preoperative setting, or whether a routine lymphadenectomy should be performed systematically in all hepatectomies for ICC. The role of routine lymphadenectomy in the surgical treatment of ICC remains controversial, with some centers considering it standard whereas other surgeons perform lymphadenectomy only as a selective indication. Recently, a growing widespread adoption of lymphadenectomy was demonstrated that nearly doubled its commonly reported execution rate. The newly updated eight edition of the American Joint Committee on Cancer (AJCC) staging system now recommends that six nodes need to be analyzed to stage patients with ICC. In this review, we analyzed and summarized some anatomic considerations of the lymphatic anatomy of the liver and the current knowledge and potential advantages of performing a routine lymphadenectomy in patients with ICC, especially looking at pathological staging, prognosis, prevention of local recurrence and outcome. New areas like lymphadenectomy in cirrhotic patients and laparoscopic lymphadenectomy are also discussed.


Subject(s)
Bile Duct Neoplasms/surgery , Cholangiocarcinoma/surgery , Bile Duct Neoplasms/diagnosis , Cholangiocarcinoma/diagnosis , Humans , Lymph Node Excision , Neoplasm Staging
2.
Liver Transpl ; 19(7): 711-20, 2013 Jul.
Article in English | MEDLINE | ID: mdl-23775946

ABSTRACT

In July 2005, Argentina became the first country after the United States to introduce the Model for End-Stage Liver Disease (MELD) for organ allocation. In this study, we investigated waiting-list (WL) outcomes (n = 3272) and post-liver transplantation (LT) survival in 2 consecutive periods of 5 years before and after the implementation of a MELD-based allocation policy. Data were obtained from the database of the national institute for organ allocation in Argentina. After the adoption of the MELD system, there were significant reductions in WL mortality [28.5% versus 21.9%, P < 0.001, hazard ratio (HR) = 1.57, 95% confidence interval (CI) = 1.37-1.81] and total dropout rates (38.6% versus 29.1%, P < 0.001, HR = 1.31, 95% CI = 1.16-1.48) despite significantly less LT accessibility (57.4% versus 50.7%, P < 0.001, HR = 1.53, 95% CI = 1.39-1.68). The annual number of deaths per 1000 patient-years at risk decreased from 273 in 2005 to 173 in 2010, and the number of LT procedures per 1000 patient-years at risk decreased from 564 to 422. MELD and Model for End-Stage Liver Disease-Sodium scores were excellent predictors of 3-month WL mortality with c statistics of 0.828 and 0.857, respectively (P < 0.001). No difference was observed in 1-year posttransplant survival between the 2 periods (81.1% versus 81.3%). Although patients with a MELD score > 30 had lower posttransplant survival, the global accuracy of the score for predicting outcomes was poor, as indicated by a c statistic of only 0.523. Patients with granted MELD exceptions (158 for hepatocellular carcinoma and 52 for other reasons) had significantly higher access to LT (80.4%) in comparison with nonexception patients with equivalent listing priority (MELD score = 18-25; 54.6%, P < 0.001, HR = 0.49, 95% CI = 0.40-0.61). In conclusion, the adoption of the MELD model in Argentina has resulted in improved liver organ allocation without compromising posttransplant survival.


Subject(s)
End Stage Liver Disease/therapy , Liver Transplantation/statistics & numerical data , Tissue and Organ Procurement/methods , Waiting Lists , Adolescent , Adult , Aged , Argentina , Female , Humans , Male , Middle Aged , Outcome Assessment, Health Care , Patient Selection , Proportional Hazards Models , Resource Allocation/methods , Risk , Time Factors , Treatment Outcome , Young Adult
3.
HPB (Oxford) ; 14(8): 548-53, 2012 Aug.
Article in English | MEDLINE | ID: mdl-22762403

ABSTRACT

OBJECTIVES: In patients diagnosed with incidental gallbladder cancer (GC), the benefit and optimal extent of further surgery remain unclear. The aims of this study were to analyse outcomes in patients who underwent liver resection following a diagnosis of incidental GC and to determine factors associated with longterm survival. METHODS: A retrospective analysis of patients diagnosed with incidental GC between June 1999 and June 2010 was performed. Data covering demographics, clinical and surgical characteristics and local pathological stage were analysed. RESULTS: A total of 24 patients were identified. All patients underwent a resection of segments IVb and V and lymphadenectomy. Histological examination revealed residual disease in 10 patients, all of whom presented with recurrent disease at 3-12 months. Overall 5-year survival was 53%. Increasing T-stage (P < 0.001), tumour-node-metastasis (TNM) stage (P= 0.003), and the presence of residual tumour in the resected liver (P < 0.001) were all associated with worse survival. CONCLUSIONS: Aggressive re-resection of incidental GC offers the only chance for cure, but its efficacy depends on the extent of disease found at the time of repeat surgery. The presence of residual disease correlated strongly with T-stage and was the most relevant prognostic factor for survival in patients treated with curative resection.


Subject(s)
Cholecystectomy , Gallbladder Neoplasms/surgery , Hepatectomy , Incidental Findings , Adult , Aged , Argentina , Female , Gallbladder Neoplasms/mortality , Gallbladder Neoplasms/pathology , Hepatectomy/adverse effects , Hepatectomy/mortality , Humans , Kaplan-Meier Estimate , Lymph Node Excision , Male , Middle Aged , Neoplasm Staging , Neoplasm, Residual , Reoperation , Retrospective Studies , Risk Assessment , Risk Factors , Time Factors , Treatment Outcome
4.
J Gastrointest Surg ; 15(10): 1814-9, 2011 Oct.
Article in English | MEDLINE | ID: mdl-21796462

ABSTRACT

BACKGROUND: Caroli's disease (CD) management is still controversial. AIM: The purpose of this study is to report the most frequent clinical features, treatment options, and outcome obtained after surgical management of CD. METHODS: A voluntary survey was conducted. Demographic, clinical, surgical, and pathological variables were analyzed. RESULTS: Six centers included 24 patients having received surgical treatment from 1991 to 2009. Seventeen (70.8%) patients were female, with average age of 48.7 years old (20-71), and 95.5% were symptomatic. There was left hemiliver involvement in 75% of the patients. Surgical procedures included nine left lateral sectionectomies, eight left hepatectomies, and four right hepatectomies for those with hemiliver disease, while for patients with bilateral disease, one right hepatectomy and two Roux-en-Y hepaticojejunostomies were performed. The average length of hospitalization was 7 days. For perioperative complications (25%), three patients presented minor complications (types 1-2), while major complications occurred in three patients (type 3a). No mortality was reported. After a median follow-up of 166 months, all patients are alive and free of symptoms. CD diagnosis was confirmed by histology. Congenital hepatic fibrosis was present in two patients (8.3%) and cholangiocarcinoma in one (4.2%). CONCLUSIONS: CD in Argentina is more common in females with left hemiliver involvement. Surgical resection is the best curative option in unilateral disease, providing long-term survival free of symptoms and complications. In selected cases of bilateral disease without parenchymal involvement, hepaticojejunostomy should be proposed. However, a close follow-up is mandatory because patients might progress and a transplant should be indicated.


Subject(s)
Caroli Disease/surgery , Adult , Aged , Argentina , Caroli Disease/mortality , Caroli Disease/pathology , Female , Hepatectomy , Humans , Jejunostomy , Length of Stay , Male , Middle Aged , Patient Selection , Retrospective Studies , Treatment Outcome , Young Adult
7.
Arch Neurol ; 60(4): 593-7, 2003 Apr.
Article in English | MEDLINE | ID: mdl-12707074

ABSTRACT

OBJECTIVE: To evaluate the oxidative state in patients with familial amyloidotic polyneuropathy type 1 (FAP1). DESIGN: From 3 unrelated families, patients with FAP1 carrying a transthyretin Met-30 mutation were studied. The diagnosis was confirmed by genetic analysis. Eleven of 21 patients carried the mutation; all were symptomatic and were clinically assessed using a clinical score. All of the patients were evaluated for copper-zinc superoxide dismutase type 1 activity in red blood cells using spectrophotometry. Plasma total reactive antioxidant potential was studied using a chemiluminescent method. The results were compared with those obtained from an age-matched control group. SETTING: A public and academic multidisciplinary research clinic. RESULTS: Six of the 11 FAP1-positive patients disclosed superoxide dismutase type 1 activity values greater than 55 U/mg of protein (upper control limit), whereas 9 of 10 patients in whom total reactive antioxidant potential was measured had values below the lower limit of the control group. No relationship was found between the levels of superoxide dismutase type 1 activity and the severity of the clinical involvement. CONCLUSIONS: Oxidative stress may be part of the mechanisms leading to tissue damage in patients with FAP1. The lack of correlation between the laboratory findings and the severity of clinical involvement may signal that oxidative processes are at work throughout the natural history of the disease.


Subject(s)
Amyloid Neuropathies, Familial/blood , Antioxidants/metabolism , Erythrocytes/enzymology , Oxidative Stress , Reactive Oxygen Species/blood , Superoxide Dismutase/blood , Amyloid Neuropathies, Familial/diagnosis , Amyloid Neuropathies, Familial/genetics , Copper/metabolism , Cyanogen Bromide/metabolism , Genotype , Humans , Immunoblotting , Methionine/genetics , Mutation , Polymerase Chain Reaction , Polymorphism, Restriction Fragment Length , Prealbumin/genetics , Superoxide Dismutase-1 , Valine/genetics , Zinc/metabolism
8.
Rev. argent. cir ; 82(5/6): 248-259, mayo-jun. 2002. tab
Article in Spanish | BINACIS | ID: bin-7791

ABSTRACT

Objetivo: Analizar la factibilidad de desarrollo de un Programa de Trasplante con los medios disponibles en un hospital público y mostrar los resultados obtenidos tras la evaluación de 1244 pacientes y la realización de 423 trasplantes de hígado, señalando las dificultades existentes en el momento actual. Lugar de aplicación: Hospitales públicos de alta complejidad. Diseño: Estudio longitudinal, retrospectivo, descriptivo, clínico. Población: Pacientes adultos y pediátricos tratados con trasplante hepático. Método: Tras una primera etapa de cirugía experimental, de estructuración edilicia y de incorporación y capacitación profesional se inició la etapa clínica. Hasta mayo del 2001 se evaluaron 1244 pacientes (688 adultos y 556 pediátricos). Resultados: Se realizaron 423 trasplantes hepáticos en 385 pacientes. El tipo de injerto utilizado fue hígado entero en 257 (61 por ciento), hígado reducido en 101 (24 por ciento), bipartición hepática "split" en 28 (6 por ciento) y donante vivo relacionado en 37 (9 por ciento). El índice de retrasplante fue del 8,9 por ciento, la falla primaria del injerto del 2,1 por ciento y la supervivencia global al año del 79,2 por ciento. Conclusiones: Se ha demostrado la factibilidad de la inserción de dos programas de trasplante hepático en hospitales públicos de distintas características. La necesidad de su existencia queda demostrada en el alto número de pacientes evaluados. Su operatividad, actividad y resultados no difieren con los de otras instituciones de referencia. El crecimiento de los programas de trasplante debe acompañarse de las modificaciones institucionales, estructurales y administrativas necesarias que permitan su total desarrollo (AU)


Subject(s)
Humans , Liver Transplantation/methods , Health Programs and Plans , Postoperative Complications , Retrospective Studies , Liver Transplantation/statistics & numerical data , Liver Transplantation/adverse effects , Argentina , Hospitals, Public , Reoperation , Liver Transplantation/economics , Replantation
9.
Rev. argent. cir ; 82(5/6): 248-259, mayo-jun. 2002. tab
Article in Spanish | LILACS | ID: lil-316353

ABSTRACT

Objetivo: Analizar la factibilidad de desarrollo de un Programa de Trasplante con los medios disponibles en un hospital público y mostrar los resultados obtenidos tras la evaluación de 1244 pacientes y la realización de 423 trasplantes de hígado, señalando las dificultades existentes en el momento actual. Lugar de aplicación: Hospitales públicos de alta complejidad. Diseño: Estudio longitudinal, retrospectivo, descriptivo, clínico. Población: Pacientes adultos y pediátricos tratados con trasplante hepático. Método: Tras una primera etapa de cirugía experimental, de estructuración edilicia y de incorporación y capacitación profesional se inició la etapa clínica. Hasta mayo del 2001 se evaluaron 1244 pacientes (688 adultos y 556 pediátricos). Resultados: Se realizaron 423 trasplantes hepáticos en 385 pacientes. El tipo de injerto utilizado fue hígado entero en 257 (61 por ciento), hígado reducido en 101 (24 por ciento), bipartición hepática "split" en 28 (6 por ciento) y donante vivo relacionado en 37 (9 por ciento). El índice de retrasplante fue del 8,9 por ciento, la falla primaria del injerto del 2,1 por ciento y la supervivencia global al año del 79,2 por ciento. Conclusiones: Se ha demostrado la factibilidad de la inserción de dos programas de trasplante hepático en hospitales públicos de distintas características. La necesidad de su existencia queda demostrada en el alto número de pacientes evaluados. Su operatividad, actividad y resultados no difieren con los de otras instituciones de referencia. El crecimiento de los programas de trasplante debe acompañarse de las modificaciones institucionales, estructurales y administrativas necesarias que permitan su total desarrollo


Subject(s)
Humans , Health Programs and Plans , Postoperative Complications , Liver Transplantation/methods , Argentina , Hospitals, Public , Reoperation , Replantation , Retrospective Studies , Liver Transplantation/economics , Liver Transplantation/adverse effects , Liver Transplantation/statistics & numerical data
10.
Rev. argent. cir ; 81(5): 122-126, nov. 2001. ilus, tab
Article in Spanish | BINACIS | ID: bin-8764

ABSTRACT

Objetivo: describir las variantes anatómicas de la arteria hepática, resaltar su importancia en la cirugía digestiva y sugerir pautas para su reconocimiento tanto pre como intraoperatorio. Lugar de aplicación: dos hospitales públicos de alta complejidad. Diseño: longitudinal, retrospectivo, descriptivo. Población: 414 hígados para ser implantados en receptores de Trasplante Hepático, 374 fueron obtenidos de donante cadavéricos y 40 segmentados laterales izquierdo de donante vivo relacionado. Método: se disecaron y clasificaron de acuerdo a su disposición anatómica (según la clasificación propuesta por Michels y modificada por Hiatt) todas las arterias hepáticas de 374 hígados obtenidos de donante cadavérico y 40 de donante vivo relacionado. Resultados: encontramos un 70,7 por ciento de variantes tipo I (distribución normal), 10,6 por ciento tipo II (rama izquierda de la coronaria estomáquica), 7 por ciento tipo III (rama derecha de la Mesentérica superior), 4,8 por ciento tipo IV (triple arteria), 2 por ciento tipo V (hepática común de Mesentérica), 0,8 por ciento tipo VI (hepática común directa de aorta) y 4 por ciento otras variantes no clasificadas. Conclusión: las variantes anatómicas de la arteria hepática son más frecuentes de lo que uno puede esperar y rondan entre el 25 y 40 por ciento. Es importante su estudio preoperatorio y su reconocimiento intraquirúrgico para evitar lesiones de alguna de sus ramas que deriven en consecuencias graves e irreversibles tanto sobre la vía biliar como el hígado (AU)


Subject(s)
Humans , Hepatic Artery/surgery , Digestive System Surgical Procedures/standards , Biliary Tract Surgical Procedures/standards , Pancreaticoduodenectomy/standards , Cholecystectomy/standards , Liver Transplantation/standards , Biliary Fistula/prevention & control , Hepatic Artery/anatomy & histology , Pancreas/surgery , Pancreatic Neoplasms/surgery , Esophagus/surgery , Retrospective Studies
11.
Rev. argent. cir ; 81(5): 122-126, nov. 2001. ilus, tab
Article in Spanish | LILACS | ID: lil-305680

ABSTRACT

Objetivo: describir las variantes anatómicas de la arteria hepática, resaltar su importancia en la cirugía digestiva y sugerir pautas para su reconocimiento tanto pre como intraoperatorio. Lugar de aplicación: dos hospitales públicos de alta complejidad. Diseño: longitudinal, retrospectivo, descriptivo. Población: 414 hígados para ser implantados en receptores de Trasplante Hepático, 374 fueron obtenidos de donante cadavéricos y 40 segmentados laterales izquierdo de donante vivo relacionado. Método: se disecaron y clasificaron de acuerdo a su disposición anatómica (según la clasificación propuesta por Michels y modificada por Hiatt) todas las arterias hepáticas de 374 hígados obtenidos de donante cadavérico y 40 de donante vivo relacionado. Resultados: encontramos un 70,7 por ciento de variantes tipo I (distribución normal), 10,6 por ciento tipo II (rama izquierda de la coronaria estomáquica), 7 por ciento tipo III (rama derecha de la Mesentérica superior), 4,8 por ciento tipo IV (triple arteria), 2 por ciento tipo V (hepática común de Mesentérica), 0,8 por ciento tipo VI (hepática común directa de aorta) y 4 por ciento otras variantes no clasificadas. Conclusión: las variantes anatómicas de la arteria hepática son más frecuentes de lo que uno puede esperar y rondan entre el 25 y 40 por ciento. Es importante su estudio preoperatorio y su reconocimiento intraquirúrgico para evitar lesiones de alguna de sus ramas que deriven en consecuencias graves e irreversibles tanto sobre la vía biliar como el hígado


Subject(s)
Humans , Hepatic Artery/surgery , Cholecystectomy , Biliary Fistula/prevention & control , Pancreaticoduodenectomy , Digestive System Surgical Procedures/standards , Biliary Tract Surgical Procedures/standards , Liver Transplantation/standards , Hepatic Artery/anatomy & histology , Esophagus/surgery , Pancreas , Pancreatic Neoplasms , Retrospective Studies
16.
Rev. argent. cir ; 64(3/4): 65-7, mar.-abr. 1993. ilus
Article in Spanish | BINACIS | ID: bin-25524

ABSTRACT

Se analizan las lesiones histológicas del hígado durante la fase temprana de la peritonitis experimental en ratas, empleando un modelo de lenta progresión consistente en la punción cecal. Se compararon las lesiones degenerativas hepáticas en dos grupos con y sin bloqueo del drenaje linfático de la cavidad peritoneal. Se observó un incremento de las lesiones degenerativas (acumulación lipídica intracitoplasmática) en el grupo de animales con bloqueo linfático


Subject(s)
Animals , Rats , Sepsis/physiopathology , Rats, Inbred Strains/surgery , Peritonitis/pathology , Disease Models, Animal , Liver/pathology , Sepsis/metabolism , Peritonitis/complications , Peritonitis/physiopathology , Lymph/drug effects , Liver/metabolism , Cyanoacrylates/adverse effects
17.
Rev. argent. cir ; 64(3/4): 65-7, mar.-abr. 1993. ilus
Article in Spanish | LILACS | ID: lil-124838

ABSTRACT

Se analizan las lesiones histológicas del hígado durante la fase temprana de la peritonitis experimental en ratas, empleando un modelo de lenta progresión consistente en la punción cecal. Se compararon las lesiones degenerativas hepáticas en dos grupos con y sin bloqueo del drenaje linfático de la cavidad peritoneal. Se observó un incremento de las lesiones degenerativas (acumulación lipídica intracitoplasmática) en el grupo de animales con bloqueo linfático


Subject(s)
Animals , Rats , Disease Models, Animal , Liver/pathology , Peritonitis/pathology , Rats, Inbred Strains/surgery , Sepsis/physiopathology , Cyanoacrylates/adverse effects , Liver/metabolism , Lymph/drug effects , Peritonitis/complications , Peritonitis/physiopathology , Sepsis/metabolism
20.
Rev. argent. cir ; 59(6): 233-6, dic. 1990. tab
Article in Spanish | BINACIS | ID: bin-27355

ABSTRACT

Se presenta un estudio comparativo entre higados de donantes mayores y menores de 50 años de edad, realizado desde el 1 de enero al 31 de diciembre de 1989. Se estudio la función hepática, la sobrevida del injerto, del paciente y el porcentaje de retrasplante en ambos grupos. Los resultados indican que no debe usarse la edad como único criterio de exclusión de donantes de hígado. (AU)


Subject(s)
Humans , Adolescent , Adult , Middle Aged , Aged , Male , Female , Comparative Study , Liver Transplantation/statistics & numerical data , Age Factors , Tissue Donors , Survival Rate
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