Background: To evaluate outcomes of surgical treatment in patients with hepatic metastases from renal-cell carcinoma in the Netherlands, and to identify prognostic factors for survival after resection. Renal-cell carcinoma has an incidence of 2,000 new patients in the Netherlands each year (12.5/100,000 inhabitants). According to literature, half of these patients ultimately develop distant metastases with 20% involvement of the liver. Resection of renal-cell carcinoma liver metastases (RCCLM) is performed in only a minority of patients. Hence, little is known about outcome of resectable RCCLM. Methods: Patients were retrieved from local databases of theNetherlands Task Force for Liver Surgery (14 centers) and from the Dutch collective pathology database. Survival and prognostic factors were determined by Kaplan-Meier analysis and log rank test. Results: Thirty-three patients were identified who underwent resection (n = 29) or local ablation (n = 4) of RCCLM in the Netherlands between 1990 and 2008. These patients comprise 0.5% to 1% of the total population of patients diagnosed with RCCLM in that period. There was no operative mortality. The overall survival at 1, 3, and 5 years was 79, 47, and 43%, respectively. Metachronous metastases (n = 23, P = 0.03) and radical resection (n = 19, P < 0.001) were statistically significant prognosticators of overall survival. Size < 50 mm (n = 18, P = 0,54), solitary metastases (n = 19, P = 0.93), and presence of extrahepatic metastases (n = 11, P = 0.28) did not have a statistically significant impact on survival. Conclusions: The favorable 5-year survival rate of 43% without operative mortality as found in this nationwide study indicates that selected patients with RCCLM can benefit from surgical treatment.,
Annals of Surgical Oncology
Erasmus MC: University Medical Center Rotterdam

Ruys, A.T, Tanis, P.J, Iris, N.D, van Duijvendijk, P, Verhoef, C, Porte, R.J, & Gulik, T.M. (2011). Surgical Treatment of Renal Cell Cancer Liver Metastases: A Population-Based Study. Annals of Surgical Oncology, 18(7), 1932–1938. doi:10.1245/s10434-010-1526-x