513PImpact of response to preoperative chemotherapy on the outcome of pulmonary metastasectomy for colorectal cancer: Results of a retrospective multicenter study. (23rd October 2018) - Okumura, T; Boku, N; Hishida, T; Ohde, Y; Sakao, Y; Yoshiya, K; Higashiyama, M; Kameyama, K; Adachi, H; Shiomi, K; Kanzaki, M; Yoshimura, M; et al.