论文部分内容阅读
目的探讨声像图特征及阻力指数(RI)在前列腺外周带良恶性病变鉴别诊断中的价值。方法经超声引导下穿刺活检病理确诊的前列腺外周带良性病灶35例,观察病灶回声强度,形态边缘,彩色血流丰富程度,并计算病灶体积,测定小动脉的阻力指数。将结果与35例经穿刺活检确诊的前列腺癌进行对照分析。结果(1)良性病变多表现为结节状,边缘清楚(71.4%);前列腺癌多表现为片状,边缘不清(60.0%),两组间差异有明显的统计学意义(P<0.01)。(2)良性病变的体积(2.12±1.52)ml,显著低于前列腺癌的体积(4.34±2.51)ml(P<0.01)。(3)在良恶性病变中的彩色血流分布没有明显的差异(P>0.05)。两组间阻力指数比较,差异有明显的统计学意义(P<0.01)。结论前列腺外周带良性病变和前列腺癌的回声强度及彩色血流分布相似,但两者在声像图上的形态、病灶体积和阻力指数方面均有显著差异,因此二维声像图特征及阻力指数在前列腺外周带良恶性病变的鉴别诊断中具有重要的作用。
Objective To explore the value of sonographic features and resistance index (RI) in the differential diagnosis of benign and malignant prostatic lesions. Methods Thirty-five benign prostatic lesions with pathologically confirmed prostatic biopsy were studied. The echo intensities, morphological margins and richness of color flow were observed. The lesion volume was calculated and the resistance index of the arterioles was measured. The results of 35 cases of puncture biopsy diagnosed with prostate cancer control analysis. Results (1) Benign lesions showed nodularity and clear margin (71.4%). Prostate cancer showed flake and unclear margin (60.0%), with significant difference between the two groups (P <0.01) ). (2) The volume of benign lesions (2.12 ± 1.52) ml was significantly lower than that of prostate cancer (4.34 ± 2.51) ml (P <0.01). (3) The distribution of color blood flow in benign and malignant lesions showed no significant difference (P> 0.05). The comparison of resistance index between the two groups showed significant difference (P <0.01). Conclusions Benign lesions in the peripheral zone of prostate are similar to echogenicity and color flow distribution of prostate cancer. However, there are significant differences in morphology, lesion size and resistance index between the two groups. Therefore, the two-dimensional sonographic features and resistance The index plays an important role in the differential diagnosis of benign and malignant lesions in the peripheral zone of the prostate.