Improved lymph node detection in minimally invasive radical surgery for colorectal cancer using nanocarbon tracer.

To investigate the influencing factors of lymph node detection after minimally invasive radical surgery in patients with colorectal cancer (CRC) and the application value of carbon nanoparticle tracing. A total of 120 patients with CRC who underwent minimally invasive radical surgery were included. They were divided into groups according to whether they were grouped by carbon nano-tracers, and the baseline data were matched by propensity score method. Univariate and multivariate methods were used to evaluate lymph nodes and positive lymph nodes after minimally invasive radical surgery. The number of detected independent factors. After propensity score matching, there were 37 patients in the tracer group and the non-tracer group; there was no significant difference in baseline data between the two groups; the number of positive lymph nodes detected in the tracer group was significantly higher than that in the non-tracer group. The results of univariate analysis showed that gender, lesion location, maximum tumor diameter, and whether to perform nanocarbon tracing were all related to the number of lymph nodes detected after minimally invasive radical surgery. Nanocarbon tracing was an independent influencing factor for the number of lymph nodes detected after minimally invasive radical surgery. Pathological type, T stage, histopathological grade, nerve invasion, and whether or not with cancer nodules were all related to the number of positive lymph nodes detected after minimally invasive radical surgery; multivariate analysis showed that T stage, pathological Histological grade, vascular invasion, and cancer nodules were all independent influencing factors for the number of positive lymph nodes detected after minimally invasive radical surgery. The number of lymph nodes detected in patients with CRC after minimally invasive radical surgery is closely related to the location of the lesion and whether carbon nanoparticle tracing is performed; those with T2-4 stage, histological grade 3-4, combined with vascular invasion and cancer nodules are more likely to Positive lymph nodes were detected.