A bulge in the gastric wall can have many causes, either polyps, inflammation, or cancer, and a clear diagnosis is made by pathology.
An antral wall bulge is a gastroscopic description and diagnosis that occurs in the anterior wall of the gastric sinus and is found to have a bulge that protrudes above the normal mucosa by direct visualization of the gastroscope. There are many causes of this condition, both benign and malignant lesions, that can cause a condition like anterior sinus bulge.
The main benign cause is usually a polyp, which can be either an inflammatory polyp, an inflammatory hyperplasia, or a glandular polyp. It can also be a submucosal bulge, such as a smooth muscle tumor or a lipoma, or it can be a mesenchymal tumor, although mesenchymal tumors are intermediate between benign and malignant, so once this is found, it is important to remove it as soon as possible to avoid malignancy.
And the malignant lesion, most commonly, is gastric cancer. In addition to this, there may be diseases due to the hematological system, such as gastric mucosa-associated lymphoma, which also falls under the category of malignancy.
There are other rare conditions, such as cysts; and ectopic pancreas due to congenital developmental abnormalities can also manifest as a bulge in the gastric sinus.