内翻性乳头状瘤(Inverted Papilloma)是尿路上皮(urothelium)的一种罕见病损,1963年首次报告,通常认为是复发率很低的移行上皮的一种良性肿瘤,病损常发生在膀胱中,在尿道和上尿路是很少见的,自从1980年报告输尿管内翻性乳头状瘤以来仅有14例报告,此种病损显微镜所见已很好被描述,但放射线所见尚无很好描述,作者报告一例并复习文献中14例的临床和X线特征。患者62岁男性,肉眼血尿2周入院,静脉肾盂造影检查均证实左侧输尿管远端有一个1×2 cm不规则充盈缺损,其似息肉,无其他泌尿系症状,术手切除病损,大体检查肿瘤坚实,呈白色,表面光滑,直径 Inverted Papilloma is a rare lesion of urothelium. It was first reported in 1963 and is generally considered to be a benign tumor of transitional epithelium with a low recurrence rate. Lesions often occur in In the bladder, the urethra and the upper urinary tract are rare, and only 14 cases have been reported since the 1980 report of inverting papilloma of the ureter. The lesion microscope has been well described by the microscope, but the radiation can be seen. Not yet well described, the author reported one case and reviewed the clinical and X-ray features of the 14 patients in the literature. A 62-year-old male patient was admitted to the hospital with gross hematuria for 2 weeks. Intravenous pyelography showed that there was a 1×2 cm irregular filling defect in the distal part of the left ureter. His polyps resembled no other urinary symptoms. His hand was used to remove the lesions. Check the tumor is solid, white, smooth surface, diameter