%0 Journal Article %T A Case of Endoscopic Mucosal Resection of Carcinoma in Adenoma at the Minor Duodenal Papilla %A Aya Kawanishi %A Kenichi Hirabayashi %A Masami Ogawa %A Masashi Yokota %A Tetsuya Mine %A Toshiki Kodama %A Yohei Kawashima %A Yoko Yamaji %J Archive of "Case Reports in Oncology". %D 2019 %R 10.1159/000499968 %X Here, we describe a case of minor papillary adenocarcinoma in adenoma that was treated with endoscopic mucosal resection (EMR). In a 67-year-old woman, sigmoid colon cancer was incidentally detected on preoperative upper gastrointestinal endoscopy. Endoscopy revealed a slightly elevated lesion at the minor duodenal papilla. The findings of a histopathologic examination were suggestive of adenocarcinoma. Computed tomography and magnetic resonance images identified a minute tumor, whereas endoscopic ultrasonography revealed that the tumor did not spread to the pancreas. We performed EMR of this lesion. There were no complications, and relapse has not occurred in 3 years. Cases of minor papillary adenocarcinoma treated with EMR are quite rare %K Minor duodenal papilla %K Adenocarcinoma in adenoma %K Endoscopic mucosal resection %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6547284/