膀胱尿路上皮癌的MR分期与病理对照

目的分析膀胱尿路上皮癌的MR表现及MR分期。方法回顾性分析27例经手术病理证实的膀胱尿路上皮癌临床表现、MR征象及分期。结果27例尿路上皮癌MR表现为结节型8例,广基底肿块型15例,浸润型4例,注射Gd-DTPA后,病灶呈轻至中度强化5例,1例无强化。病灶可向腔内或膀胱外生长,累及膀胱周围脂肪及邻近器官和淋巴结转移;T1期3例,T2期4例,T3a期7例,T3b期8例,T4期5例,与病理分期对照,MR分期的准确率为77.8%（21/27）。结论MR能够显示膀胱尿路上皮癌特征,对膀胱尿路上皮癌的分期有重要作用。

Staging of urothelial carcinoma with MR correlated with Pathology in bladder

Objective To evaluate the MRI appearances of urothelial carcinoma and the staging by MR in the bladder. Methods 27 cases with surgically and histopathology proved urothelial carcinoma were analyzed retrospectively by MR. Results The manifestations of urothelial carcinoma on MRI were nodule-type in 8 ; wide-base-mass type in 15; infiltrating type in 4. After injecting Gd-DTPA, the tumors mildly or moderately enhanced in 5, non-enhancement inl, MR could demonstrate clearly the eauliflowerlike or papillaryform protruding into the bladder lumen, or out of vesical wall, Perivesical fat and adjacent structures and lymph nodes were involved. In 3 patients with T1, In 4 patients with T2, In 7 patients with T3a, In 8 patients with T3b, In 5 patients with T4. Correlated with the staging of urothelial carcinoma by pathology, the accuracy of MR in the staging urothelial carcinoma was 77.8% （21/27）. Conclusion MRI could demonstrate features of urothelial carcinoma, and play a important role in the qualitative diagnosis and staging of urothelial carcinoma.