RESUMO
Collision tumors of the colon are rare. A 54-year-old man was referred to our hospital for the evaluation of hematochezia. Colonoscopy demonstrated the presence of about 3 cm sized mass in the rectosigmoid junction. After surgical resection, the colonic lesion was histologically composed of two discrete lesions: adenocarcinoma in the superficial layer and poorly differentiated neuroendocrine carcinoma in the deeper layer. We report this case of colonic collision tumor (adenocarcinoma and neuroendocrine carcinoma) with a review of the literature.
Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Adenocarcinoma/diagnóstico , Antígenos CD/metabolismo , Antígenos de Diferenciação de Linfócitos T/metabolismo , Carcinoma Neuroendócrino/diagnóstico , Neoplasias do Colo/diagnóstico , Colonoscopia , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Sinaptofisina/metabolismo , Tomografia Computadorizada por Raios XRESUMO
BACKGROUND: The aim of this study is to analyze the clinical significance of preoperative renal dysfunction in patients with living donor liver transplant (LDLT). METHODS: We analyzed data collected retrospectively from 327 consecutive LDLT performed at Department of Surgery, Catholic University of Korea from Jan. 2000 to Dec. 2007. Based on creatinine clearance rate (CCR) calculated before LDLT, the patients were classified in three groups: normal renal function(CCR > or =70 ml/min, 273 patients, 83.5%), mild renal dysfunction (CCR or =40 ml/min, 38 patients, 11.6%) and severe renal dysfunction (CCR1.5 mg/dl) was up to 46.2%. Even in patient with normal renal function, the incidence of postoperative hemodialysis and renal dysfunction 3 months postoperatively was about 5%. Multivariate analysis showed that preoperative serum creatinine, MELD score and postoperative diabetes predicted postoperative renal dysfunction. There was no statistical difference in survival curve between normal and mild renal dysfunction group but the patient with severe renal dysfunction showed worse survival compare with other groups (P < 0.001). CONCLUSIONS: Our data suggested that the patient with preoperative severe renal dysfunction have had poor recovery of renal dysfunction and high incidence of hemodialysis postoperatively and showed worse survival rate after transplantation.