Abstract
Background
Resection of the superior mesenteric and/or portal vein (SMV-PV) is increasingly performed with pancreatectomy for adenocarcinoma. We sought to analyze the impact of cancer at the transected edge(s) of the vein wall.
Methods
Patients who underwent pancreatectomy with vein resection between 2003 and 2015 at a single center were evaluated. R1 resection was defined per guidelines from the American Joint Commission on Cancer and the College of American Pathologists. Specimens were also evaluated for the presence (V+) or absence (V−) of cancer cells at the transected edge(s) and depth of vein invasion.
Results
Among 127 evaluated patients, 114 (90%) received preoperative therapy. R-status was categorized as margin-negative (R0)/V− (n = 72, 57%), R0/V+ (n = 19, 15%), margin-positive (R1)/V− (n = 24, 19%), and R1/V+ (n = 12, 9%). Patients with V− specimens had similar median durations of recurrence-free survival (RFS) (12 vs 9 months) and overall survival (OS) (30 vs 28 months) as did patients with V+ specimens (P > 0.05). In contrast, cancer invasion into the lumen was associated with RFS and OS (P < 0.05). Among patients who underwent R0 resection, V-status had no association with OS, RFS, or local control (P > 0.05).
Conclusion
Cancer invasion into the superior mesenteric and/or portal vein was adversely associated with survival, but cancer at the vein edge(s) was not. Transection of the SMV-PV through macroscopically normal vein may be performed to minimize resected vein length without fear of negatively affecting oncologic outcomes.
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Acknowledgments
The authors would like to thank Tamara K Locke and the department of scientific publications at the University of Texas MD Anderson Cancer Center for editorial support.
Funding
This study was supported by the NIH/NCI under award number P30CA016672.
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Supplementary figure 1
The neoadjuvant therapy regimens in this study. Gy, gray; fr, fractions; FOLFIRINOX, fluorouracil, irinotecan, leucovorin and oxaliplatin; 5 –FU, fluorouracil (DOCX 58.4 kb)
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Prakash, L.R., Wang, H., Zhao, J. et al. Significance of Cancer Cells at the Vein Edge in Patients with Pancreatic Adenocarcinoma Following Pancreatectomy with Vein Resection. J Gastrointest Surg 24, 368–379 (2020). https://doi.org/10.1007/s11605-019-04126-y
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DOI: https://doi.org/10.1007/s11605-019-04126-y