What kind of disease is gastric polyps Yamada type I?

Yamada type I gastric polyps are classified into

Yamada type I, Yamada type II, Yamada type III, Yamada type IV according to the shape of gastric polyps. Yamada type I gastric polyps are more common than other types. Yamada type I gastric polyps are not clearly demarcated between the base and the stomach wall, generally obtuse angle, usually about 1 cm in diameter, usually manifested as isolated, sessile round polyps, smooth surface, mainly occurring in the pyloric antrum. The patient can be treated by endoscopic argon coagulation, endoscopic mucosal resection of gastric polyps, etc., and the polyps will be removed.