Brosman FT, Carneiro F, Hruban RH, et al (ed):WHO classification of tumours of the digestive system, 4th ed. Lyon, International Agency for Research on Cancer, 2010, pp 322-326
2)Ito T, Sasano H, Tanaka M, et al:Epidemiological study of gastroenteropancreatic neuroendocrine tumors in Japan. J Gastroenterol. 45:234-243, 2010
3)Khashab MA, Yong E, Lennon AM, et al:EUS is still superior to multidetector computerized tomography for detection of pancreatic neuroendocrine tumors. Gastrointest Endosc 73:691-696, 2011
4)Fidler JL, Fletcher JG, Reading CC, et al:Preoperative detection of pancreatic insulinomas on multiphasic helical CT. AJR Am J Roentgenol 181:775-780, 2003
5)Bettini R, Mantovani W, Boninsegna L, et al:Primary tumour resection in metastatic nonfunctioning pancreatic endocrine carcinomas. Dig Liver Dis 41:49-55, 2009
6)Capurso G, Bettini R, Rinzivillo M, et al:Role of resection of the primary pancreatic neuroendocrine tumour only in patients with unresectable metastatic liver disease:a systematic review. Neuroendocrinology 93:223-229, 2011
7)Fendrich V, Langer P, Celik I, et al:An aggressive surgical approach leads to long-term survival in patients with pancreatic endocrine tumors. Ann Surg 244:845-851, 2006
8)Steinmuller T, Kianmanesh R, Falconi M, et al:Consensus guidelines for the management of patients with liver metastases from digestive (neuro) endocrine tumors:foregut, midgut, hindgut, and unknown primary. Neuroendocrinology 87:47-62, 2008