经直肠彩色多普勒能量图对前列腺癌的诊断价值

目的：探讨经直肠彩色多普勒能量图（CDE）对前列腺癌的诊断价值。方法：对经病理证实的24例前列腺癌（34个结节）和30例前列腺良性病变患者采用经直肠CDE检查，10例为正常对照组，将前列腺腺体及结节CDE血流图分别进行0－3级分级评定，并与彩色多普勒血流显像（CDFI）比较。结果：（1）前列腺癌血流图分级以2，3级为主，占88．2％，前列腺良性病变则以0，1级为主，占80．0％，（2）CDE诊断前列腺癌的敏感性为88．2％，特异性为80．0％，阳性预期值为79．0％，阴性预期值为88．9％；（3）CDE在前列腺癌的血液显示方面优于CDFI，但二者在血流分级及判断前列腺良恶性病变方面无显著差别（P＜0．05）。结论：经直肠CDE检查对前列腺癌的诊断具有重要价值。当CDE显示前列腺结节周边和（或）内部有异常增多的血流，尤其当结节位于周围带时，应高度怀疑前列腺癌的可能。

The value of transrectal color Doppler energy in the diagnosis of prostate cancer

Objective To evaluate the value of transrectal color Doppler energy(CDE) in the diagnosis of prostate cancer.Methods Pathologic results of 24cases with prostate cancer(34 nodes)and 30 cases with prostate tenign disease were studied by transrectal CDE,10 normal subjects were as contrasl group. The vascularity on CDE ofprostates and prostatic nodes was graded respectively on a scale of 0～3 and compared with color Doppler flow imaging(CDFI).Results ①According to the grades of the vascularity on CDE:88.24％ prostate cancer belonged to 2 and 3 gradw ,whereas 80.0％prostate benign diseases 0 and 1 grade.②The sensitivity of CDE in diagnosing prostate cancer was 88.2％,the specificity 80.0％,the positive predictive value 79.0％,the negative predictive value 88.9％;③In prostate cancer,the blood flow display of CDE was more favorable than that of CDFI,but there was little difference between them in blood flow grading and differential diagnosis of benign and malignant prostate diseases (P〉0.05).Conclusions Transrectal CDE plays important role in diagnosing prostate cancer,the prostate cancer should be highly suspected in case with focal abnormal hypervascularity on CDE within and/or aroud prostate node ,especially in peripheral zone.