Background And Objectives: It is unclear what time interval is optimal between presentation and surgical resection of left-sided obstructive colon cancer (LSOCC). This study aims to determine whether a time interval beyond 4 weeks is associated with a better outcome.
Materials And Methods: Consecutive patients who underwent surgical resection of LSOCC between January 2010 and December 2019 were collected from a prospective database. Patients were divided into three groups: (1) Emergency resection (ER group), (2) surgery in less than 4 weeks (early group), and (3) surgery beyond 4 weeks (late group).
Results: The ER group consisted of 74 (44.0%), the early group of 38 (22.6%), and the late group of 56 (33.3%) patients. Ninety-day mortality was lower in the Late group than in the ER group and the early group (1.8% vs. 12.2%, p = 0.029 vs. 15.3%, p = 0.011). In the late group 5-year recurrence-free survival was better than in the early group (82.1% vs. 63.2%, p = 0.039) and 5-year overall survival (OS) was better than in the ER group (75% vs. 51.4%, p = 0.021). Definitive surgical resection beyond 4 weeks was an independent prognostic factor for OS (Hazard ratio: 0.402, 95% CI: 0.204-0.793, p = 0.009).
Conclusion: In this study surgical resection beyond 4 weeks after presentation seems to have a better short- and long-term outcome for LSOCC.
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