Survival following resection of pancreatic endocrine tumors: importance of R-status and the WHO and TNM classification systems.

Objective: The aim of this study was to delineate the clinical outcomes and pathological characteristics of surgically resected endocrine tumors of the pancreas and to determine the importance of the World Health Organization (WHO) and tumor-node metastasis (TNM) classifications, resection status, and Ki-67 expression for long-term survival.

Patients And Methods: Sixty-nine patients underwent surgical tumor resection with curative intent during 1990-2007. Hospital records were reviewed retrospectively for medical, surgical, pathological, and radiological data.