Duodenal ulcer, causes, symptoms and how to overcome. What is Duodenal Ulcer ? Duodenal ulcer is defined as a
well-circumscribed mucosal or submucosal defect that can penetrate the mucosal
layer of the mucosa to the serous layer to cause perforation. Gastric ulcer is
a round or oval picture with a size of more than 5 millimeters from the
submucosal depth of the gastric mucosa due to interruption of gastric mucosal
integrity with ulcer base covered with debris.