“…[5][6][7][8] Nevertheless, due to the different anatomical positions of the colon and rectum, different anastomotic positions, the application of neoadjuvant therapy in rectal cancer, and the different proportions of laparoscopic surgery, the degree and rates of AL were different in various studies, and the value of CRP and PCT in predicting AL of various studies has been controversial. [9][10][11][12] Therefore, we aimed to explore the predictive value of PCT, CRP and WBC in predicting infectious complications, in particular, AL after laparoscopic rectal surgery; and compare their accuracy to further promote the safe development of enhanced recovery after surgery (ERAS) in the field of laparoscopic rectal cancer surgery. Retrospective data collection included age, sex, body mass index (BMI), history of smoking, history of drinking, neoadjuvant therapy, American Society of Anesthesiology (ASA), duration of surgery, tumour node metastasis (TNM) stages according to the American Joint Committee on Cancer (AJCC) eighth edition staging system, 13 serum WBC, PCT and CRP levels, postoperative infectious complications, and duration of postoperative hospital stay.…”