Prognostic factors in resected pancreatic neuroendocrine tumours: Experience in 95 patients.

Introduction: The aim of this study was to analyze prognostic factors for survival and recurrence in patients with resected pancreatic neuroendocrine tumors (PNT).
Methods: Medical records of 95 patients with resected PNT were retrospectively reviewed. The variables studied were: age, sex, form of presentation (sporadic/familial tumors), functionality, type of tumor, localization, type of surgery, tumor size, multifocal tumors and recurrent rate. The new WHO classification (2010) was used.
Results: There were 45 men and 50 women. Mean age was 46.8 years. Regarding the mode of presentation, it was sporadic in 66 patients (69.8%) and 29 cases were familial neuroendocrine tumors (30.2%) in association with MEN 1 syndrome. The 59% of patients suffered from non-functional tumors and 41% were functional: 20 insulinoma, 16 gastrinoma, and 3 glucagonoma. Distal pancreatectomy was the most common surgical procedure, followed by tumor enucleation in 19 patients. According to the WHO classification, 59 patients had a PNT G1, 24 PNT G2 and 12 with a poorly-differentiated carcinoma, respectively. The 5-year survival in well-differentiated tumors was 100%, regardless of the functionality. Sporadic PNT are more commonly unifocal (P<0.001), associating liver metastasis. Survival and recurrence rates after a mean follow-up of 85.3 months were 65.8 and 24%, respectively.
Conclusions: In our experience, WHO classification was an independent prognostic factor in PNT survival.
(Copyright © 2016 AEC. Publicado por Elsevier España, S.L.U. All rights reserved.)