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目的:探讨DWI及LAVA增强扫描对膀胱癌诊断及在术前分期中的应用价值。方法:搜集我院经手术病理证实的30例膀胱癌患者的常规MRI平扫、DWI及LAVA增强资料对其进行分析,总结出膀胱癌在DWI结合LAVA增强中的表现,判断其临床分期,并与术后病理分期结果进行比较。结果:膀胱三角区及膀胱后侧壁是膀胱癌最常见的好发部位,肿瘤平扫T1WI呈中等信号,T2WI呈中高信号,DWI呈明显高信号,其生长方式为:乳头状16例,广基底肿块型8例,沿膀胱壁浸润生长型6例。LAVA增强所有病例在动脉早期显著强化。MRI对病变检出敏感性为100%,DWI结合LAVA与临床病理分期符合率为93.3%(28/30),且均较病理分期偏高。结论:膀胱癌的DWI及LAVA增强表现具有特征性,在肿瘤术前诊断及分期尤其有明显优势。
Objective: To investigate the value of DWI and LAVA enhanced scan in the diagnosis of bladder cancer and its application in preoperative staging. Methods: Thirty cases of bladder cancer confirmed by surgery and pathology in our hospital were analyzed by routine MRI, DWI and LAVA enhancement data to summarize the manifestations of bladder cancer in DWI combined with LAVA enhancement, to determine the clinical stage and And postoperative pathological staging results were compared. Results: The bladder trigone and the bladder posterior wall were the most common sites of bladder cancer. The tumor showed moderate signal on plain T1WI, medium signal on T2WI, and high signal on DWI. The growth pattern was papillary 16 cases 8 cases of basal mass type, invasive growth along the bladder wall in 6 cases. LAVA enhanced all cases significantly enhanced early in the arteries. MRI detection of lesions was 100%, DWI combined with LAVA and clinical pathological staging coincidence rate was 93.3% (28/30), and were higher than the pathological stage. Conclusions: The enhanced features of DWI and LAVA in bladder cancer are characteristic, especially in the preoperative diagnosis and staging of tumors.