The small curved side of the sinus near the entrance of the pylorus bulge may be gastritis, gastric polyps, gastric ulcer and other diseases, need to take medication for the cause of the disease, surgical treatment. 1. Gastritis: the small curved side of the sinus near the pyloric orifice bulge may be caused by gastritis, the patient can be under the guidance of the doctor oral treatment of Helicobacter pylori drugs, such as clarithromycin, amoxicillin, omeprazole, bismuth potassium citrate. Or pro-dynamic drugs, such as mosapride, etopride and so on. 2. Gastric polyps: gastric polyps may also be caused by gastric polyps on the side of the lesser curvature of the gastric sinus near the pyloric portals, and patients can have gastrointestinal polyps removed endoscopically under the guidance of a doctor, thus improving the prognosis and quality of life. 3. Gastric ulcer: the small curved side of the gastric sinus near the pyloric orifice bulge is also considered to be caused by gastric ulcers, the patient can be under the guidance of the doctor oral acid-suppressing drugs, such as omeprazole, pantoprazole, etc., or oral anti-Helicobacter pylori medication, such as amoxicillin, metronidazole, lansoprazole, bismuth pectin, etc.. Some patients may resort to undergoing surgical removal of the ulcer, thereby improving the symptoms of the disease. There are many reasons for the bulge on the side of the lesser curvature of the gastric sinus near the pyloric orifice, and patients can go to regular hospitals to clarify the cause of the disease.