经直肠超声造影在前列腺癌穿刺活检中的应用价值.doc
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经直肠超声造影在前列腺癌穿刺活检中的应用价值
王尧 黄品同 刘春媚 张旭
(浙江大学医学院附属第二医院超声医学科 310009)
【摘要】目的:探讨经直肠超声造影技术在前列腺癌的诊断及靶向引导前列腺癌的穿刺活检中的临床应用价值。方法:对81例血清前列腺特异抗原(PSA)升高(ge;4.00ng/ml)的患者进行经直肠前列腺穿刺。活检前所有患者均接受常规经直肠超声(TRUS)检查和经直肠超声造影(CE-TRUS)检查,检查完成后即刻在TRUS引导下,对每位患者前列腺双侧底部、中部的内侧、外侧区和双侧前列腺尖部,行10点系统穿刺以及CE-TRUS发现的异常区域的靶向穿刺,以病理结果为金标准,比较两种技术检出前列腺癌的敏感性和穿刺点阳性率,以及CE-TRUS对诊断不同血清PSA值的前列腺癌患者的临床价值。结果:81例患者共穿刺910针,经穿刺病理诊断为前列腺癌的为35例(43.2%)142针(15.6%)。CE-TRUS发现异常者37例,其中前列腺癌患者27例,其诊断敏感性、特异性、准确性分别为77.1%、78.2%、77.8%,显著高于TRUS的62.8%、67.3%、65.4%(Plt;0.05);CE-TRUS靶向穿刺点的单针阳性率(30.0%)高于系统穿刺的(13.8%)(Plt;0.05):在35例前列腺癌患者中,CE-TRUS靶向穿刺检出病人的阳性率(77.1%)则低于系统穿刺(85.7%)(Plt;0.05)。另外,CE-TRUS技术在血清PSAlt;10ng/ml患者中的诊断阳性率(24.3%)与血清PSAge;10ng/ml的患者(40.9%)之间没有显著差异(Pgt;0.05)。结论:CE-TRUS较TRUS能检出更多的前列腺癌病例数,其引导的靶向穿刺较系统穿刺具有更好的单针阳性率,但由于在病人检出率上的差异,靶向穿刺仍无法取代系统穿刺。
【关键词】超声检查 造影剂 活组织检查 前列腺肿瘤
【中图分类号】R446 【文献标识码】A 【文章编号】2095-1752(2014)13-0037-03
Significance of contrast-enhanced transrectal ultrasonography for the detection of prostate cancer
【Abstrac】 Objective: To evaluate the value of contrast-enhanced transrectal ultrasonography(CE-TRUS)in detecting prostate cancer. Methods: Eighty-one patients with elevated serum prostate-specific antigen (PSA) levels (more than 4.00ng/mL)were evaluated with transrectal ultrasonography(TRUS) and contrast-enhanced transrectal ultrasonography(CE-TRUS) , a 10-core systematic biopsy(SB) was subsequently performed at the base,the mid gland and the apex in each patient and the targeted biopsy (TB)was performed at abnormal CE-TRUS areas. Diagnostic efficiency of the two techniques for the cancer detection was compared and the targeted biopsy was also compared to systematic biopsy. Results: Prostate cancer was detected in 142(15.6%)of 910 specimens in 35(43.2%)of 81 patients.CE-TRUS could detect 27 patients diagnosed with cancer in 37 patients in whom CE-TRUS showed abnormal., CE-TRUS had higher sensitivity specificity and overall accuracy(
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