CRC tissues (n = 73) and normal paracancerous tissues (n = 73) were obtained during the colorectal resection of 73 CRC patients at Jingmen No.1 People’s Hospital from 2012 to 2015. These tissue samples were saved at − 80 °C for RNA isolation. All cases of patients were extragenetic sporadic CRC. There was no treatment for any of the patients before surgery. The clinicopathological features of CRC patients have been shown in Table Table1.1. The written informed consent forms were signed by 73 patients. This study was approved by the Ethics Committee of Jingmen No.1 People’s Hospital and the procedures were performed in compliance with the Declaration of Helsinki.

Correlation between the circ_0082182 expression and clinicopathological features of CRC patients