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目的探讨常规 MRI 对于前列腺癌包膜外侵犯(ECE)的诊断价值。方法搜集经前列腺癌根治手术病理证实的29例前列腺癌患者的术前 MRI 资料,通过与病理结果对照,回顾性分析常规 MRI 对于前列腺癌 ECE 诊断的准确性。结果 29例手术病理证实的前列腺癌中9例有 ECE(31.0%)。MRI 诊断 ECE 的敏感性为3/9,特异性为90%(18/20),阳性预测值为3/5,阴性预测值为75%(18/24),总的诊断符合率为72.4%(21/29)。结论常规 MRI 诊断前列腺癌 ECE 的特异性较高,但敏感性低。
Objective To investigate the diagnostic value of conventional MRI for extracapsular invasion of prostate cancer (ECE). Methods Preoperative MRI data of 29 cases of prostate cancer confirmed by pathology of radical prostatectomy were collected. The accuracy of routine MRI in the diagnosis of prostate cancer was retrospectively analyzed by comparing with the pathological results. Results ECE (31.0%) was found in 9 cases of prostate cancer confirmed by surgery and pathology. The sensitivity and specificity of MRI in diagnosing ECE were 3/9, 90% (18/20), 3/5 and 75% (18/24), respectively. The overall diagnostic coincidence rate was 72.4% (21/29). Conclusion Conventional MRI is more specific, but less sensitive, for the diagnosis of prostate cancer.