Oops, you're using an old version of your browser so some of the features on this page may not be displaying properly.

MINIMAL Requirements: Google Chrome 24+Mozilla Firefox 20+Internet Explorer 11Opera 15–18Apple Safari 7SeaMonkey 2.15-2.23

Poster display

2277 - Duodenal neoplasm in screening esophagogastroduodenoscopy


09 Oct 2016


Poster display


Takayuki Nakamura


Annals of Oncology (2016) 27 (6): 462-468. 10.1093/annonc/mdw385


T. Nakamura1, Y. Kon1, S. Shibata1, K. Konuma1, T. Sanada1, H. Gonda1, Y. Suto1, K. Kobayashi1, N. Takita2, M. Shimura2, H. Yoshida1, A. Suzuki1, S. Onuki1, M. Fukuda1, C. Aoyagi1, Y. Hasegawa1, A. Nishiwaki1

Author affiliations

  • 1 Health Evaluation And Promotion, Ota Memorial Hospital, 373-8585 - Ota/JP
  • 2 Endoscopy, Ota Memorial Hospital, 373-8585 - Ota/JP


Abstract 2277


It is difficult and often impossible to screen the whole duodenum with esophagogastroduodenoscopy (EGD) technically. It seems sufficient for most of the EGD screening programs to search around the first and the second portions of the duodenum including duodenal papilla for duodenal neoplasms because other duodenal portions are believed to have rarely neoplastic lesions.


The data of the EGD screening program from June 2012 through April 2016 at Ota Memorial Hospital (OMH) in Japan was reviewed. All duodenal neoplasms detected in the EGD screening program were analyzed to reveal their characteristics.


17,449 individuals were enrolled in EGD screening program of OMH during the above period. Thirteen cases had neoplastic lesions in their duodenum (0.07%). Four of them were malignant lesions those included one duodenal carcinoma, one cancer of duodenal papilla, and two malignant lymphomas. All other nine neoplasms were adenoma. The first, the second, and the third portions of duodenum had one (7.7%), seven (53.8%), and five lesions (38.5%) respectively. A duodenal cancer located at the third portion of the duodenum. Ten cases were categorized as the superficial non-ampullary duodenal epithelial tumor (SNADET). Five of them (50%) located at the third portion of duodenum. The second and the first portions had four (40%) and one (10%) respectively. Twelve of all thirteen duodenal neoplasms (92.3%) were detected during the second half of this study period. The detection rate of the duodenal neoplasm in the second half term was 0.13% whereas that was 0.01% in the first half term.


38.5% of duodenal neoplasms were found at the third portion where usual EGD screening rarely approaches. 50% of SNADETs those include one case of carcinoma were recognized at the third portion. The detection rate of duodenal neoplasm in EGD screening program of OMH increases recently because of technical and technological improvement of endoscopy probably. It is important for EGD screening to include the duodenal third portion carefully if possible.

Clinical trial identification

Legal entity responsible for the study

Retrospective study of one private screening center


Ota Memorial Hospital


All authors have declared no conflicts of interest.

This site uses cookies. Some of these cookies are essential, while others help us improve your experience by providing insights into how the site is being used.

For more detailed information on the cookies we use, please check our Privacy Policy.

Customise settings