机构地区:[1]新疆医科大学第二附属医院泌尿外科,乌鲁木齐830063
出 处:《中国医师进修杂志》2016年第3期249-253,共5页Chinese Journal of Postgraduates of Medicine
摘 要:目的探讨血清中各项前列腺特异性抗原(PSA)[游离PsA(1PSA)、总PSA(tPSA)、前列腺特异性抗原比值(fPSA,tPSA)]联合磁共振弥散加权中表观扩散系数(ADC)及波谱成像在tPSA4—10μg,L前列腺癌(PSA灰区前列腺癌,PCa)的诊断价值。方法选取2013年12月至2015年2月诊治的血清tPSA值为4—10μg/L的老年患者56例,其中26例为PCa,30例为前列腺增生(BPH),均经病理检查确诊,收集tPSA、fPSA数据,计算fPSMtPSA、前列腺特异性抗原密度(PSAD),根据磁共振弥散加权计算ADC值,波谱分析计算[胆碱(Cho)+肌酸(Cre)],枸橼酸盐(Cit)比值,用受试者工作特征(ROC)曲线分析ADC值及(Cho+Cre)/Cit比值联合PSAD及fPSMtPSA对PCa的诊断价值。结果PCa组和BPH组tPSA比较差异无统计学意义(P〉0.05),两组fPSA、fPSMtPSA、前列腺体积、PSAD、(Cho+Cm)/Cit、ADC比较差异均有统计学意义[(1.04±0.14)μg/L比(1.22±0.34)μg/L、0.15(0.14~0.16)比0.17(0.15—0.18)、(41.45±5.70)cm。比(48.70±9.97)cm3.0.17(0.15—0.18)ng(ml·cm3)比0.16(0.14—0.17)ng/(ml·cm3)、2.22±0.59比1.17±O.52、0.98±0.28比1.39±0.24](P〈0.01或〈0.05)。fPSMtPSA+PSAD+(Cho+Cre)/Cit、fPSA/tPSA+PSAD十ADC、fPSMtPSA+PSAD+(Cho+Cre)/Cit+ADC的曲线下面积(AUC)分别为0.932、0.941、0.977,均高于fPSAhPSA+PSAD的0.771,差异有统计学意义(P〈0.01),且fPSA,fPSA+PSAD+(Cho+Cre)/Cit+ADC的AUC最高。结论PSAD及fPSMtPSA联合MRI的ADC值及波谱分析可应用于PCa的诊断。Objective To investigate the diagnostic value of prostate specific antigen (PSA) (fPSA, fPSA/tPSA, PSAD) combined with value of apparent diffusion coefficient (ADC) in diffusion weighted imaging (DWI) and magnetic resonance spectroscopy (MRS) in the diagnosis of prostate cancer (PCa) between total PSA (tPSA) 4- 10 μg/L. Methods From December 2013 to 2015 February, 56 elderly male patients with serum tPSA 4 - 10 μg/L were enrolled. Pathological examination confirmed 26 patients with PCa and 30 patients with benign prostatic hyperplasia (BPH). The levels of tPSA and free PSA(fPSA) , fPSA/tPSA, Prostate specific antigen density(PSAD), ADC value according to the DWI, choline(Cho), creatine(Cre) and citrate(Cit) in MRS were analyzed, and ADC, (Cho + Cre)/Cit combined with PSAD and fPSA/tPSA in PCa diagnosis was analyzed by receiver operating characteristic curve (ROC). Results The level of tPSA in PCa group and BPH group had no significant difference (P 〉 0.05), but the levels of fPSA, fPSA/tPSA, prostate volume, PSAD, (Cho + Cre)/Cit, ADC had significant difference: (1.04 ±0.14) μg/L vs. (1.22 ± 0.34) μg/L, 0.15(0.14- 0.16) vs. 0.17(0.15-0.18), (41.45 ± 5.70) cm3 vs. (48.70 ± 9.97) cm3, 0.17(0.15 - 0.18) ng/(ml.cm3) vs. 0.16(0.14- 0.17) ng/(ml.cm3), 2.22 ± 0.59 vs. 1.17 ± 0.52, 0.98± 0.28 vs. 1.39 :i: 0.24, P 〈 0.01 or 〈 0.05. The area under the curve of (AUC) fPSA/tPSA + PSAD + (Cbo + Cre)/Cit, fPSA/tPSA + PSAD + ADC, fPSA/tPSA + PSAD + (Cho+Cre)/Cit+ADC were 0.932, 0.941 and 0.977, and the AUC of fPSA/tPSA+PSAD+(Cho+Cre)/Cit+ ADC was the highest. Conclusions PSAD and fPSA/tPSA and the value of ADC in DWI and MRS can be used in diagnosis of PCa.
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