Intussusception of the ureter is a rare complication of some ureteral diseases. A 49-year-old man was found to have a ureteral intussusception in the middle part of the right ureter accompanied by a polyp below the invaginated segment of the ureter. Surgery confirmed the diagnostic imaging findings. Here, we present a case of ureteral intussusception associated with a fibroepithelial polyp and discuss the radiological characteristics.