彩色多普勒血流显像对前列腺癌和前列腺增生的鉴别意义

The significance of color doppler flow imaging in differentiating prostatic cancer from benign prostatic hyperplasia

目的 为评价彩色多普勒血流显像（ 以下简称 Ｃ Ｄ Ｆ Ｉ）对前列腺癌和前列腺增生的鉴别意义。方法 作者应用经直肠 Ｂ 超叠加 Ｃ Ｄ Ｆ Ｉ 检查可疑前列腺癌或前列腺增生患者， 以具有病理证实的３６ 例作为研究对象，并选１７ 例正常前列腺作对照。根据前列腺实质或团块血流信号的大小、数量和分布， 将其血流丰富程度依次分为三个等级：０ 极、Ⅰ级、Ⅱ级。结果 有８４６２ ％ 的前 列腺 癌（ Ｐ Ｃ Ａ） 为 Ⅱ级，８６９６ ％ 的 前列 腺增 生（ Ｂ Ｐ Ｈ） 为Ⅰ级，９４１ ％ 的正常前列腺为０ 级。结论 三者间均有显著差异（ Ｐ ＜ ００１） ， 具有鉴别诊断的意义。 Ｂ Ｐ Ｈ 与 Ｐ Ｃ Ａ 之间的血流峰值速度（ Ｖｓｃ ｍ ／ｓ） 和阻力指数（ Ｒ Ｉ） 则无显著差异（ Ｐ＞ ００５） 。

Objective To evaluate the significance of color doppler flow imaging (CDFI) in differentiating prostatic cancer (PCA) from benign prostatic hyperplasia (BPH).Methods 13 patients with PCA and 23 patients with BPH,which all confirmed by pathology,were examined by transrectal ultrasonography and CDFI.17 patients with normal prostate were as normal controls. According to size,number and distribution of the flow signals of the prostate,the density of the flow signals of the prostate was devided into three grades:0,Ⅰ and Ⅱ.Results 94.1% of the normal prostate belonged to grade 0,84.6% of PCA belonged to grade Ⅰ(P<0.01).However,there was no significant difference of V s (cm/s) and RI between BPH and PCA. Cionclusions CDFI may be useful to enable differentiation among PCA,BPH and normal prostate.