3Cooperman AM. Pancreatic cancer: the bigger picture[J]. Surg Clin North Am, 2001;81(3) :557-574
4Mossa AR, Levin B. The diagnosis of "early"pancreatic cancer: the university of Chicago experience[J]. Cancer, 1981 ;47(6): 1688-1697
5Anderson MA, Carpenter S, Thompson NW, et al.Endoscopic ultrasound is highly accurate and direct management in patients with neuroendocrine tumors of the pancreas[J]. Am J Gastroenterol, 2000;95(9):2271-2277
7Tio TL, Sie LH, Kallimanis G, et al. Staging of ampullary and pancreatic carcinoma: comparison between endosonography and surgery [ J ].Gastrointest Endoscop, 1996 ; 44(6): 63-70
8Habr F, Akerman P. Role of endoscopic ultrasound in the diagnosis and staging of pancreatic cancer[J].Front Biosci, 2000; 4(1): 530-535
9Nakaizumi A, Uehara H ,Lishi H, et al. Endoscopic ultrasonography in diagnosis and staging of pancreatic cancer[J]. Digest Dis Sci, 1995;40(3):696-700
10Chak A. Endoscopic ultrasonography [ J ].Endoscopy, 2000;32:146-152