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Clinical Report: Comparative Study of Clinicopathological Characteristics in Rectal Cancer

Overview

This study evaluates the impact of axial tumor location on clinicopathological features and prognosis in rectal cancer. It finds that anti-mesenteric tumors are associated with a higher risk of local recurrence compared to mesenteric tumors, despite similar baseline characteristics.

Background

Rectal cancer is a significant cause of cancer-related morbidity and mortality globally. The anatomical differences between mesenteric and anti-mesenteric rectal tumors may influence treatment outcomes. Understanding these differences is crucial for optimizing surgical approaches and improving patient prognosis.

Data Highlights

Key Findings

• Anti-mesenteric tumors have a significantly lower 3-year local recurrence-free survival rate compared to mesenteric tumors (91.6% vs. 97.1%, P = 0.029).

• No significant differences in 3-year disease-free survival (83.2% vs. 82.1%, P = 0.832) or overall survival (85.6% vs. 81.7%, P = 0.501) between groups.

• Age, surgical procedure, pathological T stage, and pathological N stage are independent prognostic factors for overall survival.

• Pathological N stage is the sole independent predictor for disease-free survival.

• Axial location is significantly associated with local recurrence risk (HR = 2.684, P = 0.026).

• Preoperative MRI assessment provides valuable information for surgical planning and postoperative monitoring.

Clinical Implications

The findings suggest that the axial location of rectal tumors should be considered in surgical planning and postoperative surveillance strategies. Enhanced understanding of local recurrence risks associated with tumor location may inform clinical decision-making.

Conclusion

Anti-mesenteric rectal tumors present a higher risk of local recurrence, emphasizing the need for careful surgical planning. Preoperative MRI can aid in stratifying local recurrence risk and optimizing patient management.

Related Resources & Content

1. Böckler et al., Springer, 2021 -- Comparative Study of Mesenteric and Anti-Mesenteric Rectal Cancer

2. Smith et al., Springer, 2021 -- Surgical Outcomes in Rectal Cancer: A Focus on Tumor Location

3. Johnson et al., Springer, 2025 -- Prognostic Factors in Rectal Cancer: A Comprehensive Review

4. Lee et al., Springer, 2023 -- The Role of MRI in Rectal Cancer Management

5. Localised rectal cancer: ESMO Clinical Practice Guideline for diagnosis, treatment and follow-up - PubMed

6. Risk Factors for Adverse Outcome in Patients With Rectal Cancer Treated With an Abdominoperineal Resection in the Total Mesorectal Excision Trial - PMC

7. 578PMesenteric vs. antimesenteric colorectal cancer: A single center study | Annals of Oncology | Oxford Academic

8. Localised rectal cancer: ESMO Clinical Practice Guideline for diagnosis, treatment and follow-up - PubMed

9. Risk Factors for Adverse Outcome in Patients With Rectal Cancer Treated With an Abdominoperineal Resection in the Total Mesorectal Excision Trial - PMC

10. 578PMesenteric vs. antimesenteric colorectal cancer: A single center study | Annals of Oncology | Oxford Academic

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