经直肠超声与直肠线圈磁共振检查对前列腺癌的诊断价值

Evaluation of transrectal ultrasound and endorectal coil cancer imaging in prostate

目的探讨经直肠超声(TRUS)、直肠线圈磁共振(enMR)联合磁共振波谱(MRS)、前列腺特异性抗原(PSA)联合前列腺特异性抗原密度(PSAD)对前列腺癌的诊断价值。方法分析18例前列腺癌和24例前列腺增生患者的TRUS、enMR联合MRS、PSA联合PSAD及病理资料,对图像特点、各种检查方法导致的误诊、漏诊进行统计分析。结果敏感性和阳性预测值最高为PSA联合PSAD,均为88.89%;特异性和阴性预测值最高为enMR联合MRS,均为92%;诊断符合率最高为上述两者,均为90.48%。结论对可疑前列腺癌患者,可先行PSA检查,再行TRUS,并联合PSAD进行分析,可以提高对前列腺癌的诊断符合率。

Objective To evaluate the significance of transrectal ultrasound （TRUS）,endrorectal magnetic resonance imaging （enMRI） combined with magnetic resonance spectorscopy （MRS）,and prostate specific antigen （PSA） combined with prostate specific antigen density （PSAD） in the diagnosis of prostate cancer.Methods The data of above examination from 18 patients with prostate cancer and 24 patients with benign prostatic hyperplasia （BPH） were anlysized.Results The highest rate （88.89%） of sensitivity and positive predictive was seen in the patients examined with PSA combined with PSAD.The highest rate （92%） of specificity and the negative predictive value was found in the cases examined with enMR combined with MRS.The diagnostic accuracy of PSA combined with PSAD were 90.48%,as same as that of enMR combined with MRS.Conclusion It is suggested that the patients with a suspicious diagnosis of prostate cancer should receive PSA test at first,and then put on TRUS and PSAD examination.