罕见的膀胱平滑肌瘤一例并文献复习体会

目的初步分析并总结该病的MRI特点。方法本科室在检查中遇到的一例经病理证实的膀胱平滑肌瘤的MRI图像,结合相关文献进行分析。结果本例膀胱平滑肌瘤MRI平扫T1WI、T2WI均呈较均匀的等信号,增强后中度强化,无蒂,基底部与膀胱壁相交呈锐角,邻近膀胱壁无明显增厚,呈良性肿瘤的形态学改变。结论膀胱非上皮性肿瘤在MRI平扫中具有较为特征性的信号特点,而平滑肌瘤是其中最常见的一种良性肿瘤,结合增强扫描以及肿瘤的形态与生长方式,可对一部分膀胱平滑肌瘤作出较为准确的诊断,从而对手术治疗起到一定的指导作用。

A case of bladder leiomyoma with literature review

Objective Preliminarily analysis of the MRI features of bladder leiomyoma.Methods The MRI manifestations were analyzed with review of previous released literatures in a case of bladder leiomyoma,which was confirmed by pathology.Results The lesion manifested homogeneous intermediate signal intensity both on non-enhanced T1WI and T2WI,and intermediate enhancement on contrast enhanced T1WI.There was no pedicle on the tumor and the tumor-bladder junction had an acute angle,indicating its benign nature.Conclusion Non-epithelial tumor has characteristic signals in non-enhanced MRI,in which the leiomyoma of bladder is the most frequent benign neoplasm encountered.Considering enhanced MRI findings,the morphology and growth pattern of the tumor,accurate diagnosis can be made in some cases of bladder leiomyoma,providing valuable informations for surgical planning.