Inverted papilloma of the ureter
Aga, Y.; Kagawa, S.; Takigawa, H.; Yoneda, F.; Sumiyoshi, Y.; Kurokawa, K.; Sano, T.
Hinyokika Kiyo. Acta Urologica Japonica 33(9): 1432-1438
1987
ISSN/ISBN: 0018-1994 PMID: 3324740 Document Number: 299379
Two cases of ureteral inverted papilloma are reported. Case 1: A 48-year-old male had asymptomatic gross hematuria and filling defect of left middle ureter on intravenous pyelography. Segmental resection of ureter was performed. The specimen was a 1 cm polypoid lesion with histologic features resembling "multifocal bud-like proliferation", which was reported as the initial stage of the inverted urothelial tumor by Kunze et al. Case 2: A 64-year-old female with asymptomatic gross hematuria and complete obstruction of left middle ureter on ante- and retrograde pyelograms. Total nephroureterectomy was performed. A 4 cm lobulated and pedunculated lesion with histologic features of typical inverted urothelial papilloma was resected. Twenty-one cases of ureteral inverted papilloma in the literature, including our cases, are analyzed.