Factors Affecting Recurrence in Colorectal Cancer
Author Information
Author(s): S.M. Bentzen, I. Balslev, M. Pedersen, P.S. Teglbjaerg, F. Hanberg-S0rensen, J. Bone, N.O. Jacobsen, A. Sell, J. Overgaard, K. Bertelsen, E. Hage, C. Fenger, O. Kronborg, L. Hansen, H. H0strup, B. N0rgaard-Pedersen
Primary Institution: Danish Cancer Society, Department of Experimental Clinical Oncology
Hypothesis
What factors influence the time to loco-regional recurrence after surgery for Dukes' B and C colorectal cancer?
Conclusion
Patients with high-risk characteristics for loco-regional recurrence may benefit from postoperative radiotherapy.
Supporting Evidence
- Perineural invasion and tumor size were significant factors affecting recurrence.
- Postoperative radiotherapy showed a significant benefit in high-risk patients.
- Age above 70 years negatively impacted loco-regional control in Dukes' B patients.
- Patients with tumors located less than 10 cm from the anal verge had worse outcomes.
- Venous invasion was associated with poor outcomes in Dukes' C tumors.
Takeaway
This study looked at patients with colorectal cancer to see what makes them more likely to have their cancer come back after surgery. It found that some patients might do better with extra treatment after surgery.
Methodology
A multivariate regression analysis was conducted on data from 468 patients with Dukes' B and C colorectal cancer, analyzing various clinical and pathological factors.
Potential Biases
Potential biases in patient selection and treatment assignment could affect the results.
Limitations
The study may not account for all variables affecting recurrence, and results may not be generalizable to all colorectal cancer patients.
Participant Demographics
The study included 468 patients, with 260 having Dukes' B and 208 having Dukes' C colorectal cancer.
Statistical Information
P-Value
0.03
Confidence Interval
95% c.l. 0.64-2.0
Statistical Significance
p<0.05
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