Annoscia S, Lozzi C, Betta P, Geraci E, Di Mauro A, Boccafoschi C
Divisione di Urologia, USSL n. 70-Alessandria.
Arch Ital Urol Nefrol Androl. 1990 Sep;62(3):333-7.
Inverted papilloma of the pelvis and the ureter is a rather uncommon (only 40 cases in the relevant literature) benign epithelial tumor, occasionally harboring foci of malignancy. Since it does not metastasize, a conservative treatment is advisable, but a strict follow up is always required. The Authors report a case of inverted papilloma of the ureter near which an area of transitional carcinoma was discovered.
盆腔和输尿管内翻性乳头状瘤是一种相当罕见的（相关文献中仅有40例）良性上皮性肿瘤，偶尔伴有恶性病灶。由于它不会发生转移，建议采取保守治疗，但始终需要严格随访。作者报告了一例输尿管内翻性乳头状瘤病例，在其附近发现了一个移行癌区域。
