国際会議 2020年11月11日 Outcome of resection for para-aortic lymph node metastasis from colorectal cancer. The 30th Biennial Congress of ISUCRS 2020 Hiroka Kondo, Yasumitsu Hirano, Toshimasa Ishii, Masahiro Asari, Shintaro Ishikawa, Atsuko Kataoka, Takatsugu Fujii, Masahiro Kataoka, Satoshi Shimamura, Shigeki Yamaguchi 開催地 online meeting