Donhujsen K, Leistenschneider W
Zentralbl Allg Pathol. 1976;120(5):413-6.
Regarding the characteristics of the inverted papilloma of the urinary bladder a report is given on two of our own observations, and its histogenesis is discussed. Out of 41 reported cases 21 patients developed symptoms of bladder obstruction and 15 patients had macrohaematuria. With exception of two cases, all the tumors were localized in the bladder neck, they were mostly solitary and in some cases pedunculated. Microscopically they showed papillomatous structures growing inverted into the stroma with only little signs of proliferation as well as microcysts with PAS-positive material, and always they had distinct borders between epithelium and connective tissues. In 33 out of 41 cases control cytoscopy was performed between 6 months and 17 years after resection. Only one case showed recidivation of the tumor.
关于膀胱内翻性乳头状瘤的特征，本文报告了我们自己的两例观察结果，并对其组织发生进行了讨论。在41例报告病例中，21例患者出现膀胱梗阻症状，15例患者有肉眼血尿。除两例外，所有肿瘤均位于膀胱颈部，大多为单发，部分有蒂。显微镜下可见乳头状结构向基质内呈内翻性生长，增殖迹象不明显，还有含PAS阳性物质的微囊肿，上皮与结缔组织之间边界清晰。41例中有33例在切除后6个月至17年进行了膀胱镜复查，仅1例肿瘤复发。
