直肠超声对前列腺良、恶性结节的鉴别诊断

The differential diagnostic value by transrectal ultrasound in diagnosing benign and malignant prostatic tubercle

目的探讨经直肠超声对前列腺良恶性结节的鉴别诊断价值，提高前列腺恶性结节术前诊断符合率。方法直肠超声检查前列腺结节65个（60人），其中前列腺癌结节15个（15例）、肉瘤结节2个（2例）、囊肿1个（1例）、结核结节2个（2例）、增生结节45个（40例）。分析良恶性结节超声显像特点并进行统计学分析。结果前列腺恶性结节特点：多位于外腺区（76．4％）；多呈实质低回声（直径〈2cm者）（81．8％）；恶性结节钙化率低（29．4％）；前列腺包膜破坏（76．5％）；外腺对称性消失（82．4％）；超声多项指标联合诊断结果与病理结果符合率84．6％（55／65）、灵敏度为83．3％，特异度为88．2％。结论直肠超声检查存在多项支持其性质判断的特征时能够鉴别前列腺结节良恶性。

Objetive To explore the differential diagnostic value by transrectal ultrasound in diagnosing benign and malignant prostatic tiibercle, and to increase diagnostic accordance rate of malignant prostatic tubercle. Methods Analysis was dorte on 65 puncture samples of prostatic tubercle by transrectal ultrasound, which included 15 malignant prostatic tubercles ,2 sarcoma tubercles, 1 prostatic cyst,2 tuberculosis tubercles,45 benign prostatic tubercles. The characteristics of ultrasonic images of prostatic nodes were analysed by statistics. Results Uhrasonography of malignant tubercle showed low level of echo,low rate of calcification, and destroying of envelope,the vanishing of exocrine gland symmetry. The diagnosis coincidence rate was 84.6%, sensitivity rate was 83.3%, specificity rate was 88.2% both ultrasound multiple alliance index and pathology result. Conclusions The characteristics of ultrasound are most important in diagnosing benign and malignant prostatic tubercle.