Objective：To evaluate the effect of laparoscopy-assisted radical resection of gastric cancer guided by carbon nanopartical tracer.
Methods：The clinical records of 109 patients who received radical resection of gastric cancer in PLA General hospital in the past 2 years were divided into three groups and analzed retrospectively. The observation group included 21 patients who underwent laparoscopic D2 radical resection of gastric cancer guided by carbon nanopartical lymph tracer; the control groups included 40 patients who underwent routine laparotscopic D2 surgery; and 48 patients who underwent open D2 radical operation as open surgery group.
Results：There was no significant difference in gender and age between the three groups. The number of lymph nodes dissected in the observation group was larger than that in control groups(both P＜0.05).The mean volume of blood loss in the observation group was (156±102)mL，less than the control group ［(182±109)mL］ and open surgery group［(230±112)mL］.The average hospital stay of the observation group was (11.9±5.8)d, shorter than the open surgery group［(17.5±9.4)d］.
Conclusions：Carbon nanopartical lymph tracer has excellent target ability for lymphadenectomy in laparoscopic  distal gastrectomy for gastric cancer. It can increase the number of dissected lymph nodes, reduce surgical trauma and achieve faster postoperative recovery.