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目的探讨经直肠超声(TRUS)对移行区前列腺癌的诊断价值。方法回顾性分析31例经病理诊断为移行区前列腺病例,总结移行区前列腺癌的形态、内部回声、边缘情况,记录动脉收缩期最大流速(Vmax)、阻力指数(RI)。结果移行区前列腺癌病灶形态不规则、边界不清,彩色血流信号增多,Vmax、RI增高。TRUS对局灶性移行区前列腺癌诊断准确率61.9%,周缘区、移行区同时受累前列腺癌诊断准确率90.0%。结论经直肠彩色多普勒超声是早期诊断移行区前列腺癌的有效方法。
Objective To investigate the diagnostic value of transrectal ultrasound (TRUS) for prostate cancer in transitional zone. Methods 31 cases of pathologically diagnosed prostate cancer were retrospectively analyzed. The morphology, internal echo and margin of prostate cancer in transitional area were summarized. The maximum systolic velocity (Vmax) and resistance index (RI) were recorded. Results The transitional region of prostate cancer lesions irregular shape, the border is unclear, color flow signals increased, Vmax, RI increased. The diagnostic accuracy rate of TRUS for prostate cancer in focal metastasis was 61.9%, and the diagnostic accuracy rate of prostate cancer in peripheral and transitional areas was 90.0%. Conclusion Transrectal color Doppler ultrasound is an effective method for the early diagnosis of prostate cancer in the transitional zone.