Prognostic factors and survival disparities in right-sided versus left-sided colon cancer.

Right-sided colon cancer (RCC) and left-sided colon cancer (LCC) differ in features and outcomes because of variations in embryology, epidemiology, pathology, and prognosis. This study sought to identify significant factors impacting patient survival through Bayesian modelling. Data was retrospectively analysed from a colorectal neoplasia database. Data on demographics, perioperative risks, treatment, mortality, and survival was analysed from patients who underwent colon cancer surgery from January 2010 to December 2021. This study involved 2475 patients, with 58.7% having RCC and 41.3% having LCC. RCC patients had a notably higher mortality rate, and their overall survival (OS) rates were slightly lower than those with LCC (P < 0.05). RCC stages I-IV consistently exhibited worse OS and relapse-free survival (RFS) than LCC (P < 0.05). Factors like age, BMI, ASA score, cancer stage, and comorbidities had significant associations with OS and RFS. Poor and moderate differentiation, lower lymph node yield, and organ resection were linked to lower survival while receiving chemotherapy; higher BMI levels and elective surgery were associated with better survival (all P < 0.05). Our study reveals key differences between RCC and LCC, emphasising the impact of age, BMI, ASA score, cancer stage, and comorbidities on patient survival. These findings could inform personalised treatment strategies for colon cancer patients.

The ALCCaS Trial: A Randomized Controlled Trial Comparing Quality of Life Following Laparoscopic Versus Open Colectomy for Colon Cancer.

BACKGROUND: This study reports the quality-of-life assessment of the ALCCaS trial. The ALCCaS trial compared laparoscopic and open resection for colon cancer. It reported equivalence of survival at 5 years. Quality of life was measured as a secondary outcome. OBJECTIVE: This study aimed to report on the quality of life data of the ALCCaS Trial. DESIGN: This study reports a randomized controlled trial comparing laparoscopic with open colonic resection. SETTINGS: The study was conducted in Australasia. PATIENTS: Patients with a single adenocarcinoma of the right, left, or sigmoid colon, presenting for elective treatment, were eligible for randomization. INTERVENTIONS: Open and laparoscopic colonic resections were performed. MAIN OUTCOME MEASURES: Patient symptoms and quality of life were measured using the Symptoms Distress Scale, the Quality of Life Index, and the Global Quality of Life Score preoperatively, and at 2 days, 2 weeks, and 2 months postoperatively. RESULTS: Of the 592 patients enrolled in ALCCaS, 425 completed at least 1 quality-of-life measure at 4 time points (71.8% of cohort). Those who received the laparoscopic intervention had better quality of life postoperatively in terms of the Symptoms Distress Scale (p < 0.01), Quality of Life Index (p < 0.01), and Global Quality of Life (p < 0.01). In intention-to-treat analyses, those assigned to laparoscopic surgery had a better quality of life postoperatively in terms of the Symptoms Distress Scale (p < 0.01) and Quality of Life Index (p < 0.01), whereas Global Quality of Life was not significant (p = 0.056). The subscales better for laparoscopic resection at all 3 postoperative time points were appetite, insomnia, pain, fatigue, bowel, daily living, and health (p < 0.05). LIMITATIONS: The primary limitation was the different response rates for the 3 quality-of-life measures. CONCLUSIONS: There was a short-term gain in quality of life maintained at 2 months postsurgery for those who received laparoscopic relative to open colonic resection. See Video Abstract at http://links.lww.com/DCR/A691.