Patients with gastric polyps often have a lack or low level of stomach acid, which can lead to symptoms such as mild upper abdominal pain and discomfort, nausea, loss of appetite, indigestion, weight loss, and diarrhea.
This condition often has no symptoms in its early stages or when there are no complications.
When symptoms do appear, they often include dull pain in the upper abdomen, bloating, and discomfort. A few patients may experience nausea and vomiting.
If the polyp is accompanied by erosion or ulceration, intermittent or continuous bleeding may occur, often presenting as a positive fecal occult blood test or black stools, while vomiting blood is rare.
Pedunculated polyps located in the pylorus can prolapse into the pyloric canal or duodenum, causing symptoms of pyloric obstruction.
Polyps growing near the cardia can cause difficulty swallowing.