膀胱内翻性乳头状瘤的CT诊断及病理特征

CT diagnosis and pathological characteristics of inverted papilloma of the bladder

目的探讨CT对膀胱内翻性乳头状瘤的诊断价值。方法对我院临床及影像资料完整并经手术病理证实的12例膀胱内翻性乳头状瘤病例进行回顾性分析。结果 8例位于膀胱三角区,2例位于膀胱侧壁,1例位于膀胱颈部,1例位于膀胱前壁。12例CT平扫均表现为单发等密度实性肿块,部分可见宽基底或蒂,部分表现为分叶,膀胱外壁光滑,盆腔淋巴结无肿大。8例表现为菜花状,3例表现为乳头状,1例呈半圆形。最大径约0.8~4.5 cm,平均2.1 cm。其中3例增强扫描表现为中-高度强化。结论内翻性乳头状瘤的CT表现上具有一定特征表现,对定性诊断有一定价值,最终确诊需要膀胱镜活检及术后病理组织学检查。

Objective To evaluate the value of CT in the diagnosis of inverted papilloma of the bladder(IPB).Methods CT findings and clinical features of 12 patients with pathologically proved IPB were retrospectively analyzed. Results The papillomas were located in bladder triangle zone in 8 cases, on lateral wall in 2 cases, on bladder neck in 1 case and on anterior wall in 1 case. The main CT features of IPB were single solid masses with pedicle basement and smooth bladder extine, and moderate to high enhancement was observed after injection of contrast medium in3 cases. Among the 12 cases, 8 were cauliflower-like, 3 were papillary, and 1 was hemisphere-like. The maximal dimension ranged from 0.8~4.5 cm(2.1 cm in mean). Conclusion CT findings of IPB reveal some characteristics, which are of certain value in the initial diagnosis. The final diagnosis should be relied on cystoscopy and postoperative pathological examination.