Fernández Aceñero M J, Blanco Gonzáles J, Pascual Martín A, Sanz Esponera J
Department of Surgical Pathology, San Carlos University Hospital, Madrid, Spain.
Minerva Urol Nefrol. 1995 Sep;47(3):133-6.
Benign tumors of the urinary tract are rarer than transitional cell carcinomas. Among the benign tumors we have those of epithelial origin (papillomas or low grade transitional cell carcinomas) and those of mesodermal origin (fibrous and angiomatous polyps, hemangiomas and lymphangiomas and neurofibromas), together with a group of miscellaneous lesions including endometriosis, amyloidosis and granulomas. The fibroepithelial polyps of the urinary tract represent between 2-6% of all the benign tumors. This rare tumor is located more frequently in the ureter and only in 11 cases reported since 1929 the location was the renal pelvis. Between 1976 and 1994 we have seen three cases of fibroepithelial polyps of the urinary tract, two of them affecting the renal pelvis and one of them affecting the ureter. We report the cases located in the pelvis and make a review of the cases reported in this location in the last years and discuss the clinical, radiological and cytological criteria that can lead to a preoperative diagnosis of this entity avoiding an unnecessary nephroureterectomy.
泌尿系统良性肿瘤比移行细胞癌少见。在良性肿瘤中，有上皮来源的（乳头状瘤或低级别移行细胞癌）和中胚层来源的（纤维性和血管瘤性息肉、血管瘤、淋巴管瘤和神经纤维瘤），还有一组杂类病变，包括子宫内膜异位症、淀粉样变性和肉芽肿。尿路纤维上皮性息肉占所有良性肿瘤的2%至6%。这种罕见肿瘤更常位于输尿管，自1929年以来仅有11例报告其位于肾盂。1976年至1994年期间，我们见过3例尿路纤维上皮性息肉，其中2例累及肾盂，1例累及输尿管。我们报告位于肾盂的病例，并对近年来该部位报告的病例进行综述，讨论可导致术前诊断该疾病实体的临床、放射学和细胞学标准，以避免不必要的肾输尿管切除术。
