Resection of liver metastasis from neuroendocrine tumors: evaluation of results and prognostic factors / Ressecção de metástases hepáticas de tumores neuroendócrinos: avaliação dos resultados e fatores prognósticos

OBJECTIVES: To determine the prognostic factors that may impact on morbidity and mortality and survival of patients undergoing surgical treatment of liver metastases from neuroendocrine tumors. METHODS: We studied 22 patients undergoing liver resection for metastases from neuroendocrine tumors between 1997 and 2007. Epidemiological and clinical data were correlated with morbidity and mortality and overall and disease-free survivals. RESULTS: twelve patients were male and ten female, with a mean age of 48.5 years. Bilobar disease was present in 17 patients (77.3%). In ten patients (45.5%) the primary tumor originated in the pancreas, terminal ileum in eight, duodenum in two, rectum in one and jejunum in one. Complete surgical resection (R0) was achieved in 59.1% of patients. Eight patients (36.3%) developed complications in the immediate postoperative period, one of them dying from septicemia. All patients undergoing re-hepatectomy and/or two-stage hepatectomy had complications in the postoperative period. The overall survival at one and five years was 77.3% and 44.2%. The disease-free survival at five years was 13.6%. The primary pancreatic neuroendocrine tumor (p = 0.006) was associated with reduced overall survival. Patients with number of metastatic nodules < 10 (p = 0.03) and asymptomatic at diagnosis (p = 0.015) had higher disease-free survival. CONCLUSION: liver metastases originating from pancreatic neuroendocrine tumors proved to be a negative prognostic factor. Symptomatic patients with multiple metastatic nodules showed a significant reduction in disease-free survival.

OBJETIVOS: Determinar fatores prognósticos com possível impacto na morbimortalidade e sobrevida de pacientes submetidos ao tratamento cirúrgico das metástases hepáticas de tumores neuroendócrinos. MÉTODOS: foram estudados 22 pacientes submetidos à ressecção hepática por metástases de tumores neuroendócrinos entre 1997 e 2007. Dados epidemiológicos e clínicos foram correlacionados com morbimortalidade e sobrevidas global e livre de doença. RESULTADOS: doze pacientes eram do sexo masculino e dez do feminino com média de idade de 48,5 anos. Doença bilobar esteve presente em 17 pacientes (77,3%). Em dez pacientes (45,5%) o tumor primário se originou no pâncreas, em oito no íleo terminal, em dois no duodeno, em um no reto e em um no jejuno. Ressecção cirúrgica completa (R0) foi alcançada em 59,1% dos pacientes. Oito pacientes (36,3%) evoluíram com complicações no pós-operatório imediato, com um paciente evoluindo ao óbito por septicemia. Todos os pacientes submetidos à re-hepatectomia e/ou hepatectomia em dois tempos evoluíram com complicações no período pós-operatório. A sobrevida global em um e cinco anos foi 77,3% e 44,2%. A sobrevida livre de doença em cinco anos foi 13,6%. O tumor neuroendócrino primário do pâncreas (p=0,006) foi associado à redução na sobrevida global. Os pacientes com número de nódulos metastáticos <10 (p=0,03) e os assintomáticos ao diagnóstico (p=0,015), apresentaram maior sobrevida livre de doença. CONCLUSÃO: metástases hepáticas oriundas de tumores neuroendócrinos pancreáticos demonstraram ser um fator prognóstico negativo. Pacientes sintomáticos e com múltiplos nódulos metastáticos apresentam redução significativa na sobrevida livre de doença.

Surgical Treatment of Liver Metastasis from Colorectal Cancer: Hospital A.C. Camargo Experience

Introduction: Colorectal cancer is the fourth leading cause of malignancy in Brazil, as well as in the US. Hepatic metastasis, occur in up to 50 of patients during the course of the disease. To date, surgical resection is the standard treatment, and is associated with the best survival outcome. Identifying prognostic factors is important for better patient selection. Patients and Methods: Data of 70 patients submitted to hepatic resection of colorectal metastasis with curative intent between January 1999 and June 2005 were reviewed Clinical data and surgical pathology features of all patients were analyzed. Results: 76 procedures were performed in 70 patients, Global estimated survival was 51 in 5 years. Prognostic significantly variables were number of metastasis, bilaterality and preoperative CEA. Postoperative death occurred only in one patient, due to infectionand sepsis. Conclusion: Surgical resection is the best treatment for colorectal hepatic metastasis, though prognostic factors imply worst outcome, survival is better than non surgical treatment. In this series we identified objective prognostic factors which might help the physician to select the best moment of resection and add systemic treatments.