Clinical Application of Carbon Nanoparticles in Lymph Node Tracing and Surgery Guiding of Colorectal Cancer

Clinical Application of Carbon Nanoparticles in Lymph Node Tracing and Surgery Guiding of Colorectal Cancer

This trial aims to clarify the relationship between carbon nanoparticles labeled lymph nodes and lymph node metastasis in different lymph node regions of colorectal cancer, and to clarify the application value of carbon nanoparticles in lymph node dissection in colorectal cancer surgery.

Inclusion Criteria:

1. a diagnosis of colorectal cancer;
2. endoscopic injection of CNP suspension preoperatively
3. planned radical resection of colorectal cancer
4. older than 18 years of age

Exclusion Criteria:

(a) emergency surgery;