Objective To improve recognition of radiologic manifestations, mechanism, classification and differential diagnosis with the gastric benign tumor prolapsing into duodenal bulb. Methods We retrospectively analyzed and studied gastric bengin tumor prolapsing into duodenal bulb,data 8 cases performed GI series and gastroscopic examination in our hospital which all were proved by surgery and pathology. Results Radiologic manifestations of the gastric benign tumor prolapsing into duodenal bulb included①filllng defect in the duodenal bulb and in the duodenal descending segment;②pulling mucusal bridge sign and widened pyloric channal ;③revealed smooth of tumor surface mucosa and/or niche shadowes--″bull eyes″ sign;④changed of the entire gastric shape;⑤manifestation of tumor prolapsing vs retured into stomach ;⑥distribution of the primary gastric benign tumors:gastric antrum 6 cases, gastric body and fundus varied 1 case. Pathologic diagnosis the gastric benign tumors prolapsing into duodenal bulb, leiomyoma 4 cases,lipoma and neurolemmoma varied 1 case, prolapsing into duodenal decending segment, leiomyoma 2 cases. Conclusion Radiological diagnosing signs of the gastric benign tumor prolapsing into duodenal bulb include①filling defect in the duodenal bulb or duodenum ;②pulllng mucosal bridge sign ;③widened pyloric channel;④changed of the entire gastric shape.

Objective: To improve recognition of radiologic manifestations, mechanism, classification and differential diagnosis with the gastric benign tumor prolapsing into duodenal bulb. Methods We retrospectively analyzed and studied gastric bengin tumor prolapsing into duodenal bulb,data 8 cases performed GI series and gastroscopic examination in our hospital which all were proved by surgery and pathology. Results Radiologic manifestations of the gastric benign tumor prolapsing into duodenal bulb included①filling defect in the duodenal bulb and in the duodenal descending segment;②pulling mucusal bridge sign and widened pyloric channal;③revealed smooth of tumor surface mucosa and/or niche shadowes - -"bull eyes" sign; ④changed of the entire gastric shape; ⑤manifestation of tumor prolapsing vs retured into stomach;⑥distribution of the primary gastric benign tumors:gastric antrum 6 cases, gastric body and fundus varied 1 case. Pathologic diagnosis the gastric benign tumors prolapsing into duodenal bulb,leiomyoma 4 cases,lipoma and neurolemmoma varied 1 case,prolapsing into duodenal decending segment,leiomyoma 2 cases. Conclusion Radiological diagnosing signs of the gastric benign tumor prolapsing into duodenal bulb include①filling defect in the duodenal bulb or duodenum;②pulling mucosal bridge sign;③widened pyloric channel:④ changed of the entire gastric shape.