PMC5356200_01
EGD showing a large, benign-appearing mass in the duodenum.
CG-CGCR170004F001.jpg
PMC5356200_01_CG-CGCR170004F001.jpg
F1
Further evaluation with esophagogastroduodenoscopy (EGD) and colonoscopy revealed a large, benign-appearing mass in the duodenum (Figure 1).
EUS revealing 3 x 4-cm subepithelial mass (arrows) arising from the submucosa with numerous cystic spaces and mixed echogenicity.
CG-CGCR170004F002.jpg
PMC5356200_01_CG-CGCR170004F002.jpg
F2
Subsequent endoscopic ultrasound (EUS) revealed a 3 x 4-cm subepithelial mass arising from the submucosa with numerous cystic spaces and mixed echogenicity (Figure 2).
Resected 3 x 12-cm polyp.
CG-CGCR170004F003.jpg
PMC5356200_01_CG-CGCR170004F003.jpg
F3
Transduodenal resection per hepatobiliary surgery revealed a 3 x 12-cm polyp (Figure 3).
Brunner's gland hyperplasia with secondary polyp formation that extends to the margin.
CG-CGCR170004F004.jpg
PMC5356200_01_CG-CGCR170004F004.jpg
F4
The transition from small nests of Brunner's glands and other submucosal elements to a multinodular proliferation composed entirely of closely spaced Brunner's glands was also noted (Figure 4).