1. Schottenfeld D, Beebe-Dimmer JL, Vigneau FD. The epidemiology and pathogenesis of neoplasia in the small intestine. Ann Epidemiol. 2009;19:58–69.
2. Dabaja BS, Suki D, Pro B, Bonnen M, Ajani J. Adenocarcinoma of the small bowel: presentation, prognostic factors, and outcome of 217 patients. Cancer. 2004;101:518–26.
3. Aparicio T, Zaanan A, Mary F, Afchain P, Manfredi S, Evans Jeffry RT. Small bowel adenocarcinoma. Gastroenterol Clin North Am. 2016;45:447–57.
4. Tsuji S, Doyama H, Tsuji K, Tsuyama S, Tominaga K, Yoshida N, et al. Preoperative endoscopic diagnosis of superficial non-ampullary duodenal epithelial tumors, including magnifying endoscopy. World J Gastroenterol. 2015;21:11832–41.
5. Kakushima N, Yoshida M, Iwai T, Kawata N, Tanaka M, Takizawa K, et al. A simple endoscopic scoring system to differentiate between duodenal adenoma and carcinoma. Endosc Int Open. 2017;5:E763–8.