Value of preoperative gastroscopic carbon nanoparticles labeling in patients undergoing laparoscopic radical gastric cancer surgery.

Abstracts Background and objectives Lymph node metastasis is crucial for gastric cancer. We aim to explore the value of preoperative gastroscopic carbon nanoparticles labeling in patients undergoing laparoscopic radical gastric cancer surgery. Methods 1199 cases undergoing laparoscopic radical gastric cancer surgery were retrospectively analyzed. 214 cases received preoperative gastroscopic carbon nanoparticles labeling. The number of total lymph nodes detected, positive lymph nodes, N staging, and operation time were analyzed. Results The patients received carbon nanoparticles labeling had more total lymph nodes detected (27.9 ± 6.5 vs 22.2 ± 4.0; P ＜ 0.001) and shorter operation time (185.9 ± 27.8min vs 218.7 ± 69.2min; P ＜ 0.001) compared with the control group. In addition, preoperative endoscopic carbon nanoparticles labeling improved the diagnosis rate of synchronous multiple gastric cancer (2.8% vs 0.4%; P ＜ 0.001). Conclusions Preoperative endoscopic carbon nanoparticles tracer labeling is of great value in patients undergoing laparoscopic radical gastric cancer surgery. It shortens the operation time, increases the number of total lymph nodes detected for more accurate pathological TNM staging, and finds some cases of synchronous multiple gastric cancer.