Cascade stomach was first described by Rieder in 1910. At fluoroscopy, barium first fills the dependent, posterior fundus to the highest level of the ridge which produces a radielogically evident demarcation between the fundus and body of the stomach, and then spills or“cascades”into the body and antrum. Many cascade stomachs are the results of intrinsic gastric lesions. In a total of 1595 upper gastrointestinal scries, we had a chance to get 300 cascade stomachs in the Department of Radiology, Jeonbug National University Hospital from January 1, 1974 to August 31, 1976. The cases were reviewed and the results were analized as follows: 1. In a total of 1595 cases of upper gastrointestinal examination cascade stomachs were 300 cases (18.8%) and among them borderline cascade stomachs were 74 cases(24.7%), nonpersistent 45 case(15.0%), persistent 181 cases(60.3%). 2. In erect lateral view, all the cascade sac was located posterioly and in erect P-A or A-P view, 238 cases(79.3%) were located medially to the maingastric axis, 36 cases (12%) on the main gastric axis and 26 cases(8.7%) laterally. 3. Among the 300 cases of cascade stomachs, 69 cases(23%) were combined with duodenal ulcer, 11 cases(3.7%) gastric ulcer, 7 cases(2.3%) gastric malignancy, 114 cases(38%) gastritis, 10 cases(3.3%) ptosis, 2 cases(0.7%) gastric diverticulum, 4 cases(1.3%) duodenal diverticulum, 3 cases(1%) esophageal varices, 1 cases(0.3%) pancreatic head carcinoma, 1 case gastrectomy, 1 case adhesion after abdominal surgery 1 case choledochoduodenal fistula. 4. Chief complains of the cascade stomach patients were indigestion, epigastric pain and distress, hunger pain, distention, belching, and weight loss. About 40% of cascade stomach patient had one or more of the above described symptoms. 5. Cascade stomach had been considered physiologic or normal deformity but we found that many cascade stomachs were the results of intrinsic or extrinsic gastric lesions. Therefore, when the deform ty appears radiologist should be careful examination of the stomach.