Relationship of Preoperative Serum Uric Acid Level with Survival in Colorectal Cancer.

To investigate the prognostic significance of uric acid level in colorectal cancer in addition to conventional factors in terms of  survival. Observational Study. At the University of Health Sciences, Dr. Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital, Ankara, Turkey, between January 2012 and December 2019.   Methodology: A total of selected 332 patients, who underwent surgery for colorectal cancer between 2012 and 2019, were retrospectively reviewed. Patients with a history of neoadjuvant therapy due to rectal cancer, GUT disease, renal failure, stage 4 disease, emergency surgery and severe preoperative infection, were excluded from the study. Peripheral blood samples were collected about a week before the operation. Serum uric acid (SUA) values were measured and recorded.   Results: The patients comprised 198 males and 134 females with a mean age  62.2 ±11.7 years (14-91) years in total. Conventional surgery was performed in 228 patients, and laparoscopy in 104 patients. Uric acid level, number of pathological lymph nodes, number of pathological lymph nodes/total number of lymph nodes (LNO), perineural invasion, type of surgery and disease stage were found to be factors affecting the prognosis (p <0.05). Uric acid cut off value of 5.3 or higher was found to be statistically significant in terms of survival. Serum uric acid (SUA) value measured preoperatively was found to be a prognostic factor for colorectal cancer. Key Words: Serum uric acid (SUA), Colon cancer, Rectal cancer, Prognostic factor.