A submucosal duodenal elevation may be a duodenal smooth muscle tumor or mesenchymal tumor, or it may be a duodenal papilla.
1. Duodenal smooth muscle tumor or mesenchymal tumor: smooth muscle tumors or mesenchymal tumors usually originate from the submucosa or the lamina propria. Most of them do not have a clear border, and the submucosal elevation usually has a smooth surface, which can be removed by submucosal dissection, and most of them can be relieved or cured after treatment.
2. Duodenal papilla: the origin of the duodenal papilla may have a number of different locations, can be mistaken for a duodenal bulge, is generally a normal condition, without special treatment.
In conclusion, submucosal duodenal elevation may be duodenal smooth muscle tumor or mesenchymal tumor, or duodenal papilla, which can be combined with ultrasound endoscopy to assist in diagnosis and treatment.