5Sun JH, Chao M, Zhang SZ, et al. Coexistence of small cell neuroendo- cerine carcinoma and villous adenoma in the ampulla of Vater. World J Gastroenterol. 2008,14(29) :4709 -4712.
6Liu SH, Tsay SH. Coexistence of large cell neuroendocerine carcinoma and adenocarcinoma of the ampulla of Vater. J Chin Med Assoc. 2008,71 (10) :536 -540.
7Selvakumar E, Rajendran S, Balachandar TG, et al. neuroendocerine carcinoma of the ampulla of Vater: a clinicopathologic evaluation. Hepatobiliary pancreat Dis Int. 2008,7 (4) :422 - 425.
6Abu Hilal M, Mcphail M J, Zeidan BA, et al. Aggressive multi- visceral pancereatic resections for locally advanced neuronedocrine tumours[J]. JOP, 2009,10(3) :276-279.
7Ito T, Sasano H, Tanaka M, et al. Epidemiological study of gastroenteropancreatic neuroendocrine tumors in Japan [J]. J Gastroenterol, 2010, 45 (2) : 234-243.
8Sunose Y, Ogawa T, Itoh H, et al. Large cell neuroendocrine carcinoma of the ampulla of rater with adenocarcinoma and squamous cell carcinoma components [ J ]. Jpn J Clin Oncol, 2011,41 (3) : 434-439.
9Peng L, Schwarz RE. Collision tumor in form of primary adenocarcinoma and neuroendocrine carcinoma of the duodenum[J]. Rare Tumors, 2012, 4 (2) : e20.
10Kim B, Huh JH, Kim Y, et al. Duodenal adenocarcinoma following a neuroendocrine tumor in the duodenum[ J ]. Korean J Intern Med, 2014, 29 (1) : 96-100.