Real World Registry Study on the No.253 Lymph Node Metastasis Patterns in Left-Sided Colon and Rectal Cancer
The goal of this observational study is to learn about the the pattern of metastasis of the No.253 lymph node in colorectal cancer. The main questions it aims to answer are: 1. What are the risk factors for metastasis to the No.253 lymph node? 2.What is the prognosis for patients with metastasis to the No.253 lymph node? Patients with descending colon cancer, sigmoid colon cancer, and rectal cancer who undergo curative surgery with dissection of the No.253 lymph node are included in this study
• Age: 18-75 years;
• Underwent laparoscopic left hemicolectomy, sigmoid colectomy, or rectal cancer radical surgery.
• Postoperative pathology confirmed as adenocarcinoma.
• No evidence of distant metastasis.