前列腺癌为男性常见肿瘤之一。如果病变局限于前列腺包膜内,可通过放疗或根治性手术切除,有望治愈该病。且前认为,某些局限性肿瘤根治失败的主要原因,是由于术前不了解瘤体是否超出腺体及有无盆腔转移。故术前准确的分期很重要。目前高分辨率直肠内超声(TRUS)能区分前列腺内的各种解剖层次,和直径小于4mm的肿瘤,对前列腺癌的诊断率高达85～90%磁共震成像(MRI)可提供解剖细节和不同组织层次,虽然对前列腺疾病的诊断价值不够满意,但对前列腺癌的诊断准确率可达83～89%,而CT的准确性仅为58～65%。作者对32例组织学证实为前列腺癌的病人进行 Prostate cancer is one of the common tumors in men. If the lesion is confined to the capsule of the prostate, it can be removed by radiotherapy or radical surgery, which is expected to cure the disease. And formerly believed that the main reason for the failure of certain localized tumors is due to the fact that they do not know whether the tumor is beyond the gland and whether there is pelvic metastasis before surgery. Therefore, accurate preoperative staging is very important. Current high-resolution rectal ultrasound (TRUS) can distinguish various anatomical levels within the prostate, and tumors less than 4mm in diameter have a diagnostic rate of up to 85-90% for prostate cancer. Magnetic resonance imaging (MRI) can provide anatomical details and At different organizational levels, although the diagnostic value of prostate disease is not satisfactory, the diagnostic accuracy of prostate cancer can reach 83 to 89%, while the accuracy of CT is only 58 to 65%. The authors performed 32 cases of histologically proven prostate cancer