Reoperation or repeated operations for complex retroperitoneal tumor        LI Pei-yu, ZHAO Xu-dong, HUANG Xiao-hui. Department of General Surgery, PLA General Hospital, Beijing 100853, China
Corresponding author: LI Pei-yu, E-mail:lipeiyu6301@163.com
Abstract    Reoperation for the recurrence of complex primary retroperitoneal tumor is an extreme challenge for surgeons. Most of the patients will get local recurrences rather than distant metastasis after primary surgery, the majority of which need reoperation or repeated operations to remove. Moreover, operation indication, the selections of operation opportunity and operation methods have great randomness.  Establishment of operation and reoperation guidelines for standard primary retroperitoneal tumor still needs the further clinical study.