case_images: PMC11342306_01
case_images: EUS image showing a hypoechoic and oval intramural lesion in the ampulla measuring 24.2 and 12.7 mm.
case_images: 10.1177_23247096241274299-fig1.jpg
case_images: PMC11342306_01_10.1177_23247096241274299-fig1.jpg
case_images: fig1-23247096241274299
case_images: The endoscopic ultrasound (EUS) revealed an oval intramural (subepithelial) lesion in the ampulla, which was concerning for malignancy (Figure 1).
case_images: Endoscopic image showing a bulging lesion at the level of the major papilla. The second image shows the resected subepithelial lesion.
case_images: 10.1177_23247096241274299-fig2.jpg
case_images: PMC11342306_01_10.1177_23247096241274299-fig2.jpg
case_images: fig2-23247096241274299
case_images: A follow-up endoscopic retrograde cholangiopancreatography (ERCP) showed a major papilla bulging with an ampullary lesion (Figure 2).
case_images: Histology slide showing pancreatic tissue with ducts and acini, consistent with ectopic pancreas at the ampulla.
case_images: 10.1177_23247096241274299-fig3.jpg
case_images: PMC11342306_01_10.1177_23247096241274299-fig3.jpg
case_images: fig3-23247096241274299
case_images: The pathology of the ampullary lesion showed benign fragments of the ampulla/duodenum with prominent pancreatic tissue, consistent with ectopic pancreas at the ampulla (Figure 3).