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目的总结泌尿道原发肿瘤MR影像诊断价值。方法回顾性总结经证实的泌尿道原发肿瘤41例,共53个瘤灶,多发占22.0%(9/41),其中移行细胞癌占90.6%(48/53)。常规快速自旋回波序列(TSE)T1WI、T2WI扫描,包括重T2WI泌尿道水成像(MRU),分析瘤灶MR等影像特征。结果肿瘤分布于肾盂26.4%(14/53)、输尿管28.3%(15/53)和膀胱45.3%(24/53))。瘤灶大多T1WI、T2WI均为中等信号强度,表现与器官壁相连的腔内充盈缺损及梗阻以上泌尿道集合系统积水。远处转移32.1%(17/53)。结论MR泌尿系统成像在显示泌尿道肿瘤特征方面具有效率高、定位准确和安全无创等重要价值,是常规检查重要补充手段。
Objective To summarize the diagnostic value of MR imaging in primary urinary tract tumors. Methods A total of 41 confirmed cases of primary urinary tract tumors were retrospectively reviewed. Totally 53 tumors were found, accounting for 22.0% (9/41) of them. Of them, transitional cell carcinoma accounted for 90.6% (48/53). Conventional fast spin echo sequence (TSE) T1WI, T2WI scan, including T2WI urinary tract water imaging (MRU), analysis of the tumor MR imaging features. Results The tumors were found in 26.4% (14/53) of the renal pelvis, 28.3% (15/53) of the ureter and 45.3% (24/53) of the bladder). Tumor mostly T1WI, T2WI are moderate signal intensity, the performance of the wall connected with the organ cavity filling defect and obstruction above the urinary collection system water. Distance transfer 32.1% (17/53). Conclusion MR urography is an important supplement to routine examination because of its high efficiency, accurate positioning and safe noninvasive in displaying features of urinary tract tumors.