Abstract
Purpose
The preoperative platelet-to-lymphocyte ratio (PLR) has been reported as an important prognostic index for pancreatic ductal adenocarcinoma (PDAC); however, the significance of the postoperative (post-op) PLR for this disease has not been elucidated.
Methods
We analyzed data on 118 patients who underwent pancreaticoduodenectomy for pancreatic head PDAC, collected from a prospectively maintained database. The post-op PLR was obtained by dividing the platelet count after surgery by the lymphocyte count on post-op day (POD) 14. The patients were divided into two groups according to a post-op PLR of < 310 or ≥ 310. Survival data were analyzed.
Results
A high post-op PLR was identified as a significant prognostic index on univariate analysis for disease-free survival (DFS) and overall survival (OS). The post-op PLR remained significant, along with tumor differentiation and adjuvant chemotherapy, on multivariate analysis for OS (hazard ratio = 2.077, 95% confidence interval: 1.220–3.537; p = 0.007). The post-op PLR was a significant independent prognostic index for poor DFS, along with tumor differentiation and lymphatic invasion, on multivariate analysis (hazard ratio = 1.678, 95% confidence interval: 1.056–2.667; p = 0.028).
Conclusions
The post-op PLR in patients with pancreatic head PDAC was an independent predictor of DFS and OS after elective resection.
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Funding
This work was supported by Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Number 20K17665 and 23K08202 (Dr. Yoshihiro Shirai).
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YS and RH designed the study. YS wrote the main manuscript. YT, TT, MY, KH, KF, SO and TS acquired the data. TG and TI made a critical revision. All the authors reviewed and approved the manuscript.
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Shirai, Y., Hamura, R., Tanji, Y. et al. The postoperative platelet-to-lymphocyte ratio predicts the outcome of patients undergoing pancreaticoduodenectomy for pancreatic head cancer. Surg Today 54, 247–257 (2024). https://doi.org/10.1007/s00595-023-02727-4
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DOI: https://doi.org/10.1007/s00595-023-02727-4