Prognostic factor for Korean patients with renal cell carcinoma and venous tumor thrombus extension: application of the new 2009 TNM staging system.

PURPOSE: To study the surgical outcomes of radical nephrectomy with thrombectomy and to determine prognostic factors for survival of Korean patients with renal cell carcinoma (RCC) and venous tumor thrombus. MATERIALS AND METHODS: A total of 124 patients with RCC and venous tumor thrombus who underwent radical nephrectomy and thrombectomy were included in this retrospective study. Cancer-specific survival (CSS) and recurrence-free survival (RFS) rates were analyzed retrospectively according to various prognostic factors. RESULTS: The median overall follow-up period for all patients was 29.0 months; the median survival period was 50.0 months. The 2-, 5- and 10-year CSS rates for all patients were 64.2%, 47.1% and 31.7%, respectively. Those for 76 patients (pN0/xM0) without metastasis at presentation were 80.9%, 64.5% and 44.9%, respectively. For all patients, lower body mass index (BMI), higher Fuhrman grade, presence of symptoms, perinephric fat invasion, invasion of inferior vena cava (IVC) wall, lymph node (LN) involvement and distant metastasis at presentation were independent predictors for decreased CSS on multivariate analysis, while thrombus level was not. For non-metastatic patients, lower BMI, presence of symptoms and tumor size were independently associated with decreased CSS. In terms of RFS, lower BMI, presence of perinephric fat invasion were prognostic factors for recurrence. CONCLUSIONS: Our data suggest that obesity is independently associated with better survival or lower risk of tumor recurrence in Korean patients undergoing radical nephrectomy with tumor thrombectomy. Also, our results indicate that Fuhrman grade, presence of symptoms, perinephric fat invasion and invasion of IVC wall, LN involvement and distant metastasis at presentation are independent predictors for survival.

Prognostic factor for Korean patients with renal cell carcinoma and venous tumor thrombus extension: application of the new 2009 TNM staging system

Purpose To study the surgical outcomes of radical nephrectomy with thrombectomy and to determine prognostic factors for survival of Korean patients with renal cell carcinoma (RCC) and venous tumor thrombus. Materials and Methods A total of 124 patients with RCC and venous tumor thrombus who underwent radical nephrectomy and thrombectomy were included in this retrospective study. Cancer-specific survival (CSS) and recurrence-free survival (RFS) rates were analyzed retrospectively according to various prognostic factors. Results The median overall follow-up period for all patients was 29.0 months; the median survival period was 50.0 months. The 2-, 5- and 10-year CSS rates for all patients were 64.2%, 47.1% and 31.7%, respectively. Those for 76 patients (pN0/xM0) without metastasis at presentation were 80.9%, 64.5% and 44.9%, respectively. For all patients, lower body mass index (BMI), higher Fuhrman grade, presence of symptoms, perinephric fat invasion, invasion of inferior vena cava (IVC) wall, lymph node (LN) involvement and distant metastasis at presentation were independent predictors for decreased CSS on multivariate analysis, while thrombus level was not. For non-metastatic patients, lower BMI, presence of symptoms and tumor size were independently associated with decreased CSS. In terms of RFS, lower BMI, presence of perinephric fat invasion were prognostic factors for recurrence. Conclusions Our data suggest that obesity is independently associated with better survival or lower risk of tumor recurrence in Korean patients undergoing radical nephrectomy with tumor thrombectomy. Also, our results indicate that Fuhrman grade, presence of symptoms, perinephric fat invasion and invasion of IVC wall, LN involvement and distant metastasis at presentation are independent predictors for survival. .

Intrauterine inflammation as a risk factor for persistent ductus arteriosus patency after cyclooxygenase inhibition in extremely low birth weight infants.

OBJECTIVES: To test the hypothesis that intrauterine inflammation increases prostaglandin production and may be a risk factor for persistent ductus arteriosus after therapy with indomethacin, a nonselective cyclooxygenase inhibitor. STUDY DESIGN: Indomethacin therapy was started after confirming ductus arteriosus within 24 hours after birth in extremely low birth weight infants. After one cycle of therapy, infants with closed ductus were classified as responders, and those with patent ductus were classified as nonresponders. Multiple logistic regression analysis was used to determine important perinatal factors associated with persistent ductus arteriosus. Immunohistochemistry with cyclooxygenase antibodies and radioimmunoassay by 6-keto prostaglandin F(1α) kit were used to determine the relationship between intrauterine inflammation and ductal patency. RESULTS: Forty-one infants were responders, and 37 infants were nonresponders. Responders were frequently small for gestational age; nonresponders frequently had lower gestational age, respiratory distress syndrome, and intrauterine inflammation. By multiple logistic regression analysis, respiratory distress syndrome and intrauterine inflammation were more frequent in nonresponders. Cyclooxygenase-1 expression in the umbilical arteries and plasma 6-keto prostaglandin F(1α) levels were higher in nonresponders. CONCLUSIONS: Respiratory distress syndrome and intrauterine inflammation were independent risk factors for persistent ductus arteriosus after indomethacin therapy in extremely low-birth weight infants. Intrauterine inflammation may have a negative influence on ductus arteriosus closure via increased cyclooxygenase-1 activity.