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Updated: May 22, 2025
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DIPLOMA Approach for Standardized Pathology Assessment of Distal Pancreatectomy Specimens
Published on: February 1, 2020
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An R0 resection margin does improve overall survival after PDAC resection- real-world evidence from 6.000 cases from
Lennart von Fritsch1, Jannis Duhn1, Thaer S A Abdalla1
1Department of Surgery, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany.
Summary
Achieving negative resection margins (R0) after pancreatic cancer surgery significantly improves patient survival. Positive margins (R1) are independently linked to poorer outcomes, highlighting margin status as a critical prognostic factor.
Area of Science:
- Oncology
- Surgical Oncology
- Cancer Research
Background:
- Pancreatic ductal adenocarcinoma (PDAC) has poor survival rates despite surgical resection being the only curative option.
- Resection margins are used to assess surgical success, but their prognostic and biological significance is debated.
Purpose of the Study:
- To evaluate the prognostic value of resection margin status in pancreatic ductal adenocarcinoma (PDAC).
- To determine if margin status is an independent predictor of survival after PDAC resection.
Main Methods:
- Analysis of pooled data from 17 German cancer registries for 5,997 PDAC resections.
- Kaplan-Meier analyses for overall survival (OS) and disease-free survival (DFS).
- Cox regression and multivariable regression to analyze margin status (R0/R1) and predictors of R1 resection.
Main Results:
- Negative margins (R0) were associated with significantly improved median OS (19.3 vs. 13.4 months) and DFS (14.2 vs. 10.9 months) compared to positive margins (R1).
- Positive margins (R1) were an independent risk factor for poor survival (HR 1.41).
- Tumor size, perineural invasion, and lymph node involvement predicted margin-positive resection.
Conclusions:
- Resection margin status is an independent risk factor for OS and DFS in PDAC patients.
- Margin status influences patient outcomes beyond just reflecting tumor biology.
