Retrospective Study
Copyright ©The Author(s) 2021.
World J Clin Cases. Mar 6, 2021; 9(7): 1563-1579
Published online Mar 6, 2021. doi: 10.12998/wjcc.v9.i7.1563
Figure 1
Figure 1 Flow diagram. From the 260882 patients with rectal cancer in the Surveillance, Epidemiology, and End Results Program database, a total of 2773 eligible patients were screened. TNM: Tumor-node-metastases; CEA: Carcinoembryonic antigen; TD: Tumor engraftment; CRM: Circumferential resection margin; PNI: Perineural invasion.