Prognostic role of neutrophil-to-lymphocyte ratio (NLR) in patients with operable ampullary carcinoma.

Ampullary carcinoma or cancer of the ampulla of Vater is a rare malignancy with a high recurrence rate. Although cost-effective biomarkers, such as neutrophil-to-lymphocyte ratio (NLR), have been investigated in other cancers for predicting postoperative prognosis in patients, studies on the role of NLR in ampullary cancer are scarce. Here we aimed to evaluate the prognostic significance of preoperative NLR in patients with operable ampullary carcinoma. We retrospectively reviewed 87 patients who underwent pancreaticoduodenectomy for the treatment of ampullary carcinoma between December 1999 and April 2014. The association between NLR and prognosis (overall survival [OS] and disease-free survival [DFS]) was evaluated. Possible correlations between NLR and clinicopathological features were also assessed. The 5-year DFS and OS rates after surgery in patients with ampullary carcinoma were 51% and 63%, respectively. A high NLR (≥3.0) was found in 40 patients. The NLR was a significant prognostic factor for both OS and DFS. Multivariate analysis revealed a significantly worse OS in patients with positive surgical margins and NLR ≥3 (p = 0.001). Patients with T3-T4 stage (p = 0.029) and NLR ≥3 (p = 0.043) had a lower DFS. Patients with a high NLR had a significantly worse Eastern Cooperative Oncology Group performance score. Preoperative NLR is an independent and significant predictive factor of prognosis in patients with ampullary carcinoma. An elevated pretreatment NLR (e.g., NLR ≥3) may be considered as a biomarker for poor prognosis in patients with ampullary carcinoma.