经直肠彩色超声对前列腺癌诊断分析

目的：经直肠彩超检查，对照病理结果，探讨PCa的彩色多普勒超声表现和特征。方法：对经直肠彩超引导下穿刺活检确诊为PCa的30例患者35个恶性结节和BPH的25例患者42个增生结节的回顾，分析在二维声像图和彩色多普勒血流显像中的不同。结果：PCa结节出现在外周带为主，占86％（30／35），内部以低回声多见，占88％（31／35）；BPH结节多出现在内腺，占81％（22／42），内部高低回声均可见。BPH结节和PCa结节血供均增加，但PCa结节比BPH结节血流更丰富，动脉收缩期最高流速峰值、舒张末期血流峰速，加速指数、血流阻力指数明显增高，两者差异有统计学意义（P〈0．05）。结论：经直肠彩超有助于前列腺良恶病变的定性诊断，更有利于穿刺活检的准确定位。

Analysis of Benign Prostatic Hyperplasia and Prostatic Cancer by Transrectal Color Doppler Ultrasound

Objective： To investigate the ultrasongraphie features of benign prostatic hyperplasia （BPH） and prostatic carcinoma（PCa）by transrectal color Doppler ultrasonography. Methods：The features of 35 malignant nod- ules in 30 cases and 42 benign nodules in 25 cases on the two-dimension and color Doppler ultrasongraphy were analyzed. All cases were confirmed by transrected puncture biopsy. Results： In our study, 86% （30/35）PCa ndulesf distributed in outer gland of prostate and presented mostly hypoeehoic. 81% （22/42）of BPH nodules distributed in the inner gland of prostate and presented hypereehoic or hypoechoic. The prostatic nodules showed more arterial blood supply than normal prostatic tissue and the nodules of PCA showed more arterial blood supply than nodules of BPH. There were significant differences in peak systolic velocity, end diastolic velocity, accelerative index and re- sistance index, between the PCa group and the BPH group（P〈0.05）. Conclusions：Transrectal color Doppler ultra sonography is valuable in the diagnosis of PCA and BPH and helpful in the guidance of prostatic puncture biopsy.