报告行经直肠前列腺B超检查12501例次,根据前列腺癌（PCa）的超声图像特征发现前列腺癌患者28例,后均经病理检查证实。认为经直肠超声显像检查结合直肠指诊及活检,应成为早期诊断PCa的重要方法,亦可用于大规模人群PCa筛选。 Reports of 12501 cases of transrectal prostate B-ultrasound, according to the characteristics of prostate cancer (PCa) ultrasound image found 28 patients with prostate cancer, were confirmed by pathological examination. It is considered that rectal ultrasound imaging combined with digital rectal examination and biopsy should be an important method for early diagnosis of PCa, and can also be used for large-scale screening of PCa.