小儿膀胱横纹肌肉瘤的影像诊断

The imaging diagnosis of bladder rhabdomyosarcoma in children

目的:探讨小儿膀胱横纹肌肉瘤(RMS)的X线造影和CT表现特征,提高对本病的认识。方法:回顾性分析16例经手术病理证实的膀胱RMS的临床影像资料,全部病例均行静脉尿路造影和E或膀胱造影检查,其中6例行CT扫描。结果:造影显示葡萄簇状充盈缺损13例;膀胱三角区大的分叶状充盈缺损影3例,6例膀胱壁毛糙。6例CT均显示膀胱腔内典型葡萄簇状低于腹壁肌肉密度软组织肿块,膀胱壁增厚,增强呈轻中度强化。结论:膀胱RMS影像表现具有一定特征,结合患儿年龄及临床特征多可做出正确诊断。

Objective： To study the cystography and CT features of bladder rhabdomyosarcoma in children for further un-derstanding the disease. Materials and Methods： Clinical data and imaging findings in 16 cases with bladder rhabdomyosar-coma were retrospectively analyzed. All cases had intravenous urography or cystogram, and 6 cases had CT scan. Results：Botryoidal filling defects were found in 13 cases, massive phylloid filling defects in 3 cases and rigid bladder in 6 cases in intravenous urography or cystogram. Botryoidal shadow of low-muscular density and thick-walled bladder were showed on CT scan while after the administration of contrast media the tumors were mildly or moderately enhanced. Conclusions： There are some certain radiographic characteristics in pediatric bladder rhabdomyosarcoma, we can make a correct diagnosis combining with clinical features.