1. Chan C, Herrera MF, de la Garza L, Quintanilla-Martinez L, Vargas-Vorackova F, Richaud-Patin Y, Llorente L, Uscanga L, Robles-Diaz G, Leon E, et al. Clinical behavior and prognostic factors of periampullary adenocarcinoma. Ann Surg. 1995;222:632–7.
2. Kim JH, Kim MJ, Chung JJ, Lee WJ, Yoo HS, Lee JT. Differential diagnosis of periampullary carcinomas at MR imaging. Radiographics. 2002;22:1335–52.
3. Chen CH, Tseng LJ, Yang CC, Yeh YH, Mo LR. The accuracy of endoscopic ultrasound, endoscopic retrograde cholangiopancreatography, computed tomography, and transabdominal ultrasound in the detection and staging of primary ampullary tumors. Hepatogastroenterology. 2001;48:1750–3.
4. Chen WX, Xie QG, Zhang WF, Zhang X, Hu TT, Xu P, Gu ZY. Multiple imaging techniques in the diagnosis of ampullary carcinoma. Hepatobiliary Pancreat Dis Int. 2008;7:649–53.
5. Sarmiento JM, Nagomey DM, Sarr MG, Farnell MB. Periampullary cancers: are there differences? Surg Clin North Am. 2001;81:543–55.