RESUMEN
OBJECTIVE: Postoperative bowel movement dysfunction is a challenging problem greatly affecting patients' quality of life after low anterior resection. We aimed to evaluate the bowel movement function of patients undergoing laparoscopic low anterior resection for rectal cancer. PATIENTS AND METHODS: This retrospective study recruited 82 rectal cancer patients undergoing laparoscopic low anterior resection from July 2018 to July 2020 at 108 Military Central Hospital, Hanoi, Vietnam. RESULTS: The patients' mean age was 62.3±11.6 (28-84) years, 54 (65.9%) were males, and 28 (34.1%) were females. Bowel movement function changed significantly after one year: the average score for low anterior resection syndrome (LARS) after three months, six months, and one year was 17.6, 14.0, and 10.6, respectively. The rate of patients with major LARS decreased from 26.8% after three months to 14.6% after one year. The Wexner score also decreased from 5.9 after three months to 3.4 after one year. The rate of patients with normal bowel movement increased from 28.0% after three months to 46.3% after one year. The rate of patients with complete fecal incontinence decreased from 11.0% after three months to 7.3% after one year. Preoperative chemoradiotherapy (p=0.017), tumor location (p=0.02), method of anastomosis (p=0.01), and anastomosis location (p=0.000) were risk factors associated with major LARS after surgery. CONCLUSIONS: Bowel movement dysfunction in rectal cancer patients undergoing laparoscopic low anterior resection is a common and persistent problem after surgery. However, bowel function gradually recovers over time. Therefore, patients should be monitored and supported for a better quality of life.