Preoperative platelet-lymphocyte ratio is an independent significant prognostic marker in resected pancreatic ductal adenocarcinoma
Received 10 October 2007; received in revised form 6 December 2007 published online 22 July 2008.
Abstract
Background
The objective of this study was to investigate whether the preoperative platelet-lymphocyte (P/L) ratio represents a significant prognostic index in resected pancreatic ductal adenocarcinoma.
Methods
A total of 110 patients undergoing pancreatoduodenectomy for pancreatic ductal adenocarcinoma over a 10-year period were identified from a prospectively maintained database.
Results
The preoperative P/L ratio was found to be a more significant prognostic marker (P < .001) than either the lymphocyte count (P = .007) or platelet count (P = .068) on univariate Cox survival analysis. The median overall survival in patients with a P/L ratio of 150 or less (n = 48) was 19.7 months, 13.7 months in those with a P/L ratio of 151 to 300 (n = 43), and 5.8 months in patients with a value of greater than 300 (n = 19) (log-rank, P = .006). The preoperative P/L ratio retained significance on multivariate analysis (P < .001), along with tumor size (P = .010) and lymph node ratio (P = .013).
Conclusions
The preoperative P/L ratio represents a significant independent prognostic index in patients of resected pancreatic adenocarcinoma.
aDivision of Surgery and Oncology, School of Cancer Studies, Royal Liverpool University Hospital, 5th Floor UCD Building, Daulby St., Liverpool, L69 3GA, UK
bDepartment of Pathology, School of Cancer Studies, Royal Liverpool University Hospital, Liverpool, UK
ABSTRACT