Peritoneal carcinomatosis treated with cytoreductive surgery and intraperitoneal chemotherapy / Carcinomatose peritoneal tratada com cirurgia citoreductiva e quimioterapia intraperitoneal

ABSTRACT

ABSTRACT Introduction: To evaluate the combined treatment with cytoreductive surgery and intraperitoneal chemotherapy for peritoneal carcinomatosis arising from colorectal cancer, pseudomyxoma peritonei and mesothelioma. Methods: Data were obtained from 73 patients with peritoneal carcinomatosis arising from colorectal cancer (52.1%), pseudomyxoma peritonei (41.1%) or mesothelioma (6.8%) between 2002 and 2011. We reported the morbidity grade (II, III and IV), mortality and survival rates of the candidates after cytoreductive surgery and intraperitoneal chemotherapy. Results: 41 (56.2%) women participated, and the median age was 50 years. Thirty-nine patients (53.4%) underwent complete cytoreductive surgery and intraperitoneal chemotherapy. Patients who underwent a complete cytoreduction received intraperitoneal chemotherapy with mitomycin C, from which only 16/39 (41%) had hyperthermic intraperitoneal chemotherapy (41-42 °C). The overall morbidity rate was 23.3% and the grade III/IV complication rate was 12.3%. The overall mortality rate was 5.5%. The univariate analysis showed that cytoreductive surgery and intraperitoneal chemotherapy (p = .029), a blood transfusion (p = .002) and the operative time (p = .001) were significant for the occurrence of postoperative complications. Patients with peritoneal carcinomatosis from colorectal cancer who underwent complete cytoreductive surgery and intraperitoneal chemotherapy had overall survival rates of 81.3%, 12.5% and 12.5% at 1, 3 and 5 years, respectively. Patients with peritoneal carcinomatosis from pseudomyxoma peritonei who underwent complete cytoreductive surgery and intraperitoneal chemotherapy had overall survival rates of 84.2%, 77.7% and 77.7% at 1, 3 and 5 years, respectively. Conclusion: The combined treatment for peritoneal carcinomatosis may be performed safely with acceptable morbidity and mortality in a specialized unit setting. Although over half of patients underwent normothermic intraperitoneal chemotherapy, our results were comparable to results from others centers.

RESUMO

RESUMO Introdução: O objetivo foi avaliar o tratamento combinado da cirurgia citorredutora e quimioterapia intraperitoneal em pacientes com carcinomatose peritoneal secundária ao câncer colorretal, pseudomixoma peritoneal e mesotelioma. Métodos: Foram obtidos dados de 73 pacientes com carcinomatose peritoneal secundária ao cirurgia citorredutora (52.1%), pseudomixoma peritoneal (41,1%) ou mesotelioma (6,8%). Foram avaliados o grau de morbidade, a taxa de mortalidade e as taxas de sobrevida após a cirurgia citorredutora e quimioterapia intraperitoneal. Resultados: 41 (56,2%) pacientes do sexo feminino participaram, com média de idade de 50 anos. 39 pacientes (53,4%) foram submetidos a cirurgia citorredutora completa e quimioterapia intraperitoneal. Todos esses receberam Mitomicina C, sendo 16/39 (41%) quimioterapia intraperitoneal hipertérmica (41-42°C). A morbidade global foi 23,3%, com taxa de mortalidade global de 5,5%. A análise univariada mostrou que câncer colorretal e quimioterapia intraperitoneal (p = .029), transfusão sanguínea (p = .002) e tempo operatório (p = .001) foram associados com complicações pós-operatórias. Pacientes com carcinomatose peritoneal secundária ao cirurgia citorredutora submetidos a cirurgia citorredutora completa e quimioterapia intraperitoneal tiveram sobrevida global de 81,3%; 12,5% e 12,5% em 1, 3 e 5 anos, respectivamente. Os pacientes com pseudomixoma peritoneal que foram submetidos a cirurgia citorredutora completa e quimioterapia intraperitoneal tiveram sobrevida global de 84,2%; 77,7% e 77.7% em 1, 3 e 5 anos, respectivamente. Conclusão: O tratamento combinado para carcinomatose peritoneal é seguro quando realizado em centros terciários com experiência no procedimento. Embora mais da metade dos pacientes tenham sido submetidos a quimioterapia intraperitoneal normotérmica após a cirurgia citorredutora completa, os resultados podem ser comparados a de outros centros que utilizam exclusivamente a quimioterapia hipertérmica.