Bottom bulge 1.5 x 2 cm not seen erosion is most commonly seen in diseases such as external pressure, polyps in the bottom of the stomach, and tumors in the bottom of the stomach. 1. External pressure: If organs other than the stomach, such as the spleen and liver, press on the bottom of the stomach, it may lead to a bulge in the bottom of the bottom of 1.5 × 2 cm not seen erosion. 2. Stomach bottom polyp: stomach polyp is a benign lesion of the gastric mucosa, usually usually no obvious symptoms, occasionally stomach discomfort. It can also appear in the bottom of the stomach elevated 1.5 × 2 cm without seeing the erosion of the situation. 3. Submucosal tumors such as mesenchymal tumors: 1.5 x 2 cm of the bottom of the stomach without seeing the erosion may also be caused by submucosal tumors such as mesenchymal tumors. Mesenchymal tumors are a kind of heterogeneous tumors, mostly occurring in the gastrointestinal tract, with clear boundaries and no peritoneum, and the main clinical manifestations are epigastric pain, blood in the stool, and obstruction. Gastric fundus elevation 1.5 × 2 cm without erosion may also be caused by other reasons, it is recommended that the patient consult a doctor in a timely manner to clarify the cause of the disease, and then follow the doctor’s instructions to give targeted treatment.