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1.
对10例非转移性前列腺癌和20例前列腺增生的前列腺特异性抗原密度(PSAD)进行研究。前列腺癌平均PSAD值为0.711,而前列腺增生为0.075;两者有极显著性差异(P<0.001)。9例PSAD>0.2者,8例为前列腺癌。16例PSAD<0.1者,无1例前列腺癌。8例前列腺癌患者中有3例前列腺特异性抗原(PSA)<10ng/ml,1例<2.8ng/ml。16例前列腺增生患者中7例PSA>2.8ng/ml,3例>10ng/ml。表明血清PSA轻中度增高或正常时,PSAD可作为前列腺癌早期筛选诊断的有效指标之一。  相似文献   

2.
PSA,PSAD诊断前列腺癌的临床意义   总被引:10,自引:0,他引:10  
采用放射免疫分析方法测定20例前腺癌病人的血清前列腺特异抗原(PSA)和前列腺特异抗原密度(PSAD),以38例前列腺增生症作为对照,评价二者对前列腺癌的诊断价值,探讨其与临床分期和病理分级的关系。结果PSA界限值定为4μg/L时,其诊断敏感度为85.0%,特异度为39.5%,准确度为55.2%。PSA界限值为10μg/L时,敏感度80.0%,特异度76.3%,准确度为77.6%。用PSAD诊断前列腺癌,敏感度为85.0%,特异度为78.9%,准确度为81.0%。结果显示PSAD可更有效地诊断前列腺癌。PSA与临床分期成正相关,而PSAD与临床分期成负相关。PSA与病理分级有一定关系。  相似文献   

3.
前列腺特异性抗原普查在诊断前列腺癌中的作用   总被引:20,自引:0,他引:20  
目的 了解血清叫前列腺特异抗原(T-PSA)、游离PSA(F-PSA)、PSA密度(PSAD)在诊断前列腺癌中的作用。方法 门诊检查40岁以上男性病人共324例,活检筛查出前列腺癌9例(2.8%),将病人分组进行比较。结果 前列腺癌组T-PSA、F-PSA和PSAD高于前列腺增生和其他疾病组(P〈0.05)。血清T-PSA〈4ng/ml、4~10ng/ml、〉10ng/ml者发现前列腺癌的比例分别  相似文献   

4.
由于前列腺特异性抗原(PSA)在前列腺良恶性疾病诊断鉴别中存在一定误差率,故改用前列腺特异性抗原密度(PSAD)对38例前列腺病患者进行研究,其中前列腺癌11例,前列腺增生27例。运用核磁共振(MRI)测量前列腺长、宽、高,借助公式:体积=长×宽×高×0.5计算出前列腺体积,则PSAD=PSA/V。研究结果表明:前列腺肥大PSAD平均值为0.055,前列腺癌PSAD平均值为1.144,前列腺增生组中PSAD最大值未超过0.23,即使超过0.15的仅2例。在总共12例PSAD大于0.15的患者中,前列腺癌占了10例,而前列腺肥大仅2例。而PSAD小于0.1的范围中前列腺增生有22例,而前列腺癌却无一例,由此可见PSAD可作为前列腺良恶性疾病鉴别诊断的有效指标之一。  相似文献   

5.
前列腺特性性抗原密度的测定在诊断前列腺癌中的价值   总被引:3,自引:0,他引:3  
对10例非转移性前列腺癌和20例前列腺增生的前列腺特异性抗原密度进行研究。前列腺癌平均PSAD值为0.7111,而前列腺增生为0.075;两者有极显著性差异。9例PSAD>0.2者,8例为前列腺癌。16例PSAD<0.1者,无1例前列腺癌。8例前列腺癌患者中有3例前列腺特异性抗原(PSA)<10ng/ml,1例<2.8ng/ml。16例前列腺增生患者中7例PSA>2.8ng/ml,3例>10mg/  相似文献   

6.
前列腺特异性抗原嘧度诊断前列腺偶发癌的临床价值   总被引:1,自引:0,他引:1  
为探讨前列腺偶发癌早期诊断的有效指标,对11例前列腺偶发癌和20例前列腺增生症患前列腺特异性抗原嘧度进行了检测,结果前列腺偶发癌DPSA平均值为0.15±0.13ng(ml.cm^3,(BPH为0.07±0.06ng/(ml.cm^3)。两进有非常显性差异。11例DPAS〉0.1ng/(ml.cm^3),9例为前腺偶发癌;20例DPSA〈0.1ng/(ml.cm^3),18例为BPH。而有  相似文献   

7.
PSA作为筛选前列腺癌瘤标的几点体会   总被引:2,自引:0,他引:2  
为了进一步提高前列腺特异抗原(PSA)筛选前列腺癌的准确性,分析了自1993年1月~1995年8月经病理学诊断的56例前列腺增生症(BPH)和30例前列腺癌的病例资料。结果显示,当肿瘤阳性筛选界值为10.0μg/L时检出肿瘤的灵敏性为60%,特异性为90%;前列腺体积和急性尿潴留可显著影响PSA值。BPH组中17例(30.4%)PSA超过10.0μg/L,前列腺癌组中4例(13.3%)PSA低于10.0μg/L,1例(3.3%)低于2.6μg/L(参考正常值上界)。结合前列腺大小,以及是否合并其它病理状态等分析,可提高PSA检出肿瘤的灵敏性;对界值以下的BPH患者应密切随访,据年度PSA增长率等对可疑病例作前列腺穿刺活检,直至前列腺切除术,以提高前列腺癌的早期诊断率。  相似文献   

8.
游离PSA/总PSA比值诊断前列腺癌的临床意义   总被引:4,自引:2,他引:4  
目的 探讨血清游离前列腺特异抗原(fPSA)/ 总前列腺特异抗原(tPSA)比值对前列腺癌的诊断价值。方法 用酶联双抗夹心法检测22 例前列腺癌,48 例前列腺增生(BPH) 和20 例正常对照组的血清fPSA、tPSA,并计算fPSA/tPSA 比值,评价其对前列腺癌的诊断价值。结果 以fPSA/tPSA0.15 为判断上限时,其诊断敏感性为90 .9% ,特异性为87.5% ,诊断准确性为88 .6 % ,明显优于tPSA和fPSA 单独测定结果。结论 fPSA/tPSA可更有效地诊断前列腺癌。  相似文献   

9.
前列腺疾病诊断中血清游离态PSA指标的应用价值   总被引:20,自引:2,他引:20  
目的探讨血清游离态PSA(FPSA)和总PSA(TPSA)及游离态/总(F/T)PSA比值作为前列腺疾病诊断指标的价值。方法测定56例未经治疗的BPH病人和39例前列腺癌病人血清FPSA和TPSA,并计算F/T比值。结果TPSA及F/T可有效区分BPH和前列腺癌(P<0.005),尤其在诊断灰区(TPSA为4.0~10.0μg/L)中效果更明显。以TPSA≤10.0μg/L,F/T≥0.16为界值时,前列腺癌筛选的临床概率敏感度为94.7%。结论FPSA和F/T比值的引入,使血清PSA测定更为精细,保持了实验的高敏感度,尤其是在前列腺癌的诊断灰区  相似文献   

10.
PSA及PSAD测定对前列腺癌的诊断价值   总被引:14,自引:1,他引:13  
应用双抗体夹心酶标免疫法对无选择性201例无明显良性前列腺增生(BPH)症状的45岁以上男性进行血清前列腺特异抗原(PSA)及前列腺特异抗原密度(PSAD)测定,并以慢性前列腺炎14例,BPH已作前列腺切除11例作为对照。结果发现:PSA随年龄增大而增高,至70岁以后未再继续增高。PSA>4μg/L者22例,其中11例在B超引导下作前列腺穿刺活检,10例为BPH,1例为前列腺癌。PSA及PSAD对鉴别BPH与前列腺癌价值不大,BPH手术后PSA逐步下降至正常  相似文献   

11.
We describe an unusual case of a prostatic adenocarcinoma presenting with a ureteric stricture secondary to a discrete metastatic lesion. A 76-year-old man presented with a short history of right loin pain. Initial examination was unremarkable, digital rectal examination was normal and prostate specific antigen was within normal range. Computed tomography showed right hydronephrosis and a distal ureteric stricture. A distal ureteric transitional cell carcinoma was thought to be most likely. A nephroureterectomy was carried out and histology revealed a skipped lesion of a metastatic prostate adenocarcinoma. Metastatic lesions to the ureters due to prostate cancer are rare. It was believed to be secondary to a transitional cell carcinoma as there was no evidence initially to suggest prostatic disease as the cause. A prostatic adenocarcinoma should be considered in the differential diagnosis of any lesions in the ureter believed to have a malignant origin.  相似文献   

12.

Purpose

To describe and test a quantitative system for designating prostate tumor location on magnetic resonance imaging (MRI) and prostatectomy. A system for describing tumor location will facilitate research correlating MRI and pathology.

Materials and methods

The prostate cylindrical coordinate (PCC) system was developed for locating prostate tumors using 3 coordinate values. The 3 coordinate values include the angular location centered on the urethra, the radial distance to the periphery and the long axis from apex to base. To evaluate this system, 26 tumors were identified where the prostate cancer was noted by both the radiologist and the pathologist. PCC values were assigned independently to MRI lesions and corresponding tumors. Intraclass correlation coefficient (ICC) was calculated to assess agreement between PCC assigned using MRI and pathology. The coordinates were used to calculate the average distance between the centers of the same lesion measured by MRI and pathology.

Results

Each of the cylindrical coordinates assigned by MRI and pathology were compared and there was no significant difference. The agreement was excellent, and the ICC was 0.70 (P<0.001) for the angular coordinate, 0.81 (P<0.001) for the radial distance, and 0.94 (P<0.001) for the long axis. Compared to pathology, lesions on MRI were significantly larger (1.17 vs. 0.86 cm2, P<0.001) but there was strong agreement between the measurements on MRI and pathology (ICC = 0.89, P<0.001). The distance between the centers of the lesions measured on MRI and pathology was small (10.13 mm, s.d. = 8.70).

Conclusions

The PCC system quantitatively characterizes lesions seen on MRI and prostatectomy pathology with good agreement.  相似文献   

13.
血清PSA值和前列腺结节指导前列腺穿刺活检的临床意义   总被引:6,自引:0,他引:6  
目的 探讨血清PSA浓度变化与前列腺癌及其骨转移的相关性。方法 对93例直肠指诊异常及血清PSA〉4ng/ml的患者,行直脾性B超引志下前列腺穿刺活检;用99mTc-MDP行全身骨扫描判断有无骨。结果 93例中前列腺活检阳性者60例,其中26例扫描阳性;随血清PSA浓度升高,前列腺阳性活检率及其远处骨转移阳性率升高。 血清PSA升高与前列腺癌及其骨转移的发生率呈正相关。  相似文献   

14.
目的 :探讨前列腺按摩治疗精液迟缓液化症的临床意义。方法 :对 48例精液迟缓液化症患者和 30例精液液化正常者分别测定其精液前列腺特异抗原 (PSA)含量 ;对精液迟缓液化症患者前列腺按摩前后测定其精液 PSA浓度 ;对 16例精液迟缓液化症患者 ,前列腺按摩前后行性交后试验 ,取其配偶宫颈粘液显微镜下观察活精子数。结果 :精液迟缓液化症患者精液 PSA含量明显低于液化正常组 (P <0 .0 1) ;前列腺按摩后精液 PSA浓度明显升高 (P <0 .0 5 ) ;按摩后其配偶宫颈粘液每高倍视野活精子数明显增加。结论 :在女方围排卵期对男方行前列腺按摩治疗精液迟缓液化症 ,方法简便 ,效果可靠 ,实用性强。  相似文献   

15.
目的:探讨人前列腺癌组织中前列腺干细胞抗原(PSCA)蛋白和mRNA的表达状况及其相关性.方法:采用免疫组化和原位杂交方法同步检测48例前列腺癌组织中PSCA蛋白和mRNA的表达,并进一步比较其表达水平之间的相关性.结果:免疫组化和原位杂交检测显示:42例(87.5%)的PSCA蛋白阳染区域所见与其mRNA阳染区域相同,其中的37例的蛋白和mRNA表达水平(评分值)均一致,其余11例的PSCA蛋白表达水平与其mRNA表达水平比较,均有不同程度的降低.结论:PSCA蛋白和mRNA在人前列腺癌组织中的表达水平具有很高的一致性,PSCA蛋白表达与PSCA基因的转录密切相关.  相似文献   

16.
前列腺移行带特异抗原密度检测前列腺癌的临床观察   总被引:2,自引:0,他引:2  
目的 评价前列腺移行带特异抗原密度 (PSAT)检测前列腺癌 (PCa)的临床价值。 方法 用酶免法测定 30例PCa及 88例良性前列腺增生症 (BPH)患者血清PSA水平 ,用经直肠前列腺B超测定患者总前列腺体积及移行带体积 ,并计算PSA密度 (PSAD)及PSAT值。 结果 PSA在 4~ 10ng/ml时 ,PCa和BPH患者PSAD值分别为 0 .2 6± 0 .11、0 .13± 0 .0 6 ,两组间相比差别具有显著性意义 (P <0 .0 1) ;PSAT值则分别为 1.0 4± 0 .70、0 .2 1± 0 .13 ,两组间相比差别具有显著性意义 (P <0 .0 1)。若选择PSAD =0 .15作为判断患者是否需穿刺活检的标准 ,将有 2 7%的PCa漏诊 ,而若选择PSAT =0 .35作为判断患者是否需穿刺活检的标准 ,只有 9%的PCa漏诊 (P <0 .0 1)。 结论 PSAT是一种新的有效的检测PCa的方法 ,PSA在 4~ 10ng/ml范围时 ,用PSAT检测PCa较用PSAD更精确。  相似文献   

17.
The Prostate CAncer gene 3 (PCA3 or DD3) is a promising urinary, gene-based, prostate cancer biomarker. This specific non-coding mRNA sequence is highly over expressed in more than 95% of primary prostate tumors. The feasibility of a PCA3 gene-based molecular assay for the detection of prostate cancer (PCa) cells in the urine has been demonstrated, and, recently, a quantitative PCA3 urine test with the potential for general use in clinical settings has been developed. Thus, current data from the literature are now available which demonstrate the superiority of the PCA3 score over prostate-specific antigen (PSA) level, at least in terms of predictive value and specificity but with a slightly lower sensitivity. These results are particularly encouraging for the specific population of patients who initially have a negative biopsy result, as using a PCA3 assay would allow them to avoid unnecessary repeated biopsies. Finally, this review discusses the limited data available that demonstrates a correlation between PCA3 score and tumor volume, extra capsular extension and the ability to distinguish indolent from significant cancer.  相似文献   

18.
目的:探讨前列腺体积及前列腺特异抗原密度与前列腺穿刺阳性率的关系并分析其原因.方法:选择2004~2007年间于我院行超声引导下经直肠前列腺系统8针穿刺的患者192例.以前列腺体积<30 ml、30~50 ml、>50 ml为界,计算并比较各组问前列腺穿刺的阳性率及PSAD≥0.15时,前列腺穿刺阳性率的变化.结果:前列腺体积与前列腺穿刺阳性率呈负相关(r=0.237,P<0.01),前列腺体积<30 ml组,穿刺阳性率为39.1%(18/46);30~50 ml组,阳性率为21.7%(13/60);>50 ml组,阳性率为9.3%(8/86).各组间差异有统计学意义(P<0.01,P<0.05).前列腺特异抗原密度≥0.15时,三组间阳性率差异仍有统计学意义(P<0.01).但三组漏诊率分别为11.1%(2/18)、30.8%(4/13)、62.5%(5/8),差异有统计学意义(P<0.01).结论:前列腺体积是前列腺穿刺阳性率的独立影响因素,应根据前列腺体积制定穿刺方案.  相似文献   

19.
目的 探讨前列腺特异性抗原(PSA)与前列腺结节增生、Ⅳ型前列腺炎及前列腺癌之间的关系,探讨PSA升高的病理学基础.方法 有完整临床病理资料的前列腺疾病504例患者,均无前列腺癌和穿刺活检史,均行PSA、全身骨扫描、MRI和前列腺穿刺活检.直肠B超引导下以18G自动穿刺活检枪行双侧叶6-13点法前列腺穿刺活检.对患者穿刺的病理标本按前列腺结节增生、前列腺癌以及Ⅳ型前列腺炎病理诊断标准进行评价.结果 504例患者经病理证实前列腺癌185例(37%),Ⅳ型前列腺炎109例(21%),前列腺增生210例(42%).3组总PSA(t-PSA)分别为27.6(0.4~7116)、10.6(0.2~168)和9.2(0.3~60)ng/ml,3组间比较差异有统计学意义(P<0.01);f-PSA分别为3.5(0.1~3356)、1.7(0.1~42)和1.5(0.06~15.8)ng/ml,3组间比较差异有统计学意义(P<0.001);f/t-PSA分别为0.14(0<0.94)、0.17(0.04~0.91)和0.16(0.02~0.75).3组间比较差异有统计学意义(P=0.019);3组间年龄、B超、直肠指诊结果比较差异无统计学意义(P>0.05).前列腺癌分级与f-PSA(r=0.33,P<0.001)、t-PSA(r=0.27,P<0.001),f/t-PSA(r=0.22,P=0.003)具有显著相关性;多元线性回归分析发现前列腺癌分级与f-PSA(t=-2.34,P=0.02),t-PSA(t=2.77,P=0.006),f/t-PSA(t=3.97,P<0.001)具有显著相关性.前列腺癌临床分期间f-PSA和t-PSA差异有统计学意义(P<0.001).210例前列腺增生患者若按腺体增生为主和间质增生为主2类比较,t-PSA和f-PSA差异均有统计学意义(P<0.05).多元线性回归分析发现t-PSA足前列腺增生病理结节类型最相关的指标,t-PSA≥2.5 ng/ml,确定腺体增生为主型前列腺增生的敏感性为96%,特异性为20%(P<0.05).Ⅳ型前列腺炎109例和前列腺增生210例,2组间比较f-PSA,t-PSA,f/t-PSA差异有统计学意义(P<0.05).通过ROC曲线确定前列腺癌敏感指标的界值:f-PSA≥0.85 ng/ml,t-PSA≥4 ng/ml和f/t-PSA≤0.16(P<0.05).结论 血清PSA升高的病理基础为任何破坏前列腺上皮血屏障的病变;任何形成前列腺上皮增生,分泌更多PSA的病变;其中以破坏前列腺上皮血屏障最重要.  相似文献   

20.
Previous studies have detected high levels of matrix metalloproteinases (MMPs) in metastatic prostate cancer. In this study, we recruited 40 patients with prostate cancer (PCa): 20 presented organ-confined carcinoma and 20 had metastatic cancer. We also recruited 40 subjects for control groups, 20 with benign prostate hyperplasia (BPH) and 20 healthy males with similar characteristics. All of the patients were monitored at the beginning (time 0) and after 90 days. We analyzed the plasma concentrations of MMP-2, MMP-9, MMP-13, TIMP-1 and the enzyme activity of MMP-2 and MMP-9,using specific ELISA tests. The plasma concentrations of MMP-2, MMP-9 and MMP-13 were higher in PCa patients with metastasis than in the other groups, and in these patients decreased markedly after therapy began. For MMP-2 and MMP-9, greater differences were observed in enzyme activity than in plasma concentrations. TIMP-1 was reduced in PCa patients with metastasis, even if the intergroup differences were not statistically significant. Our results suggest that the plasma concentration and activity of MMPs, in association with PSA determination, could play a role in diagnosis, monitoring therapy and evaluating malignant progression in PCa.  相似文献   

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