目的　研究动态螺旋CT增强对前列腺癌和增生的诊断 ,提高CT对前列腺疾病的检出率。方法　前列腺疾患和盆腔其他疾患男性患者共 88例常规平扫 ,再行动态螺旋CT增强扫描 ,回顾观察经病理证实、资料完整的 5例前列腺癌和 11例前列腺增生的影像资料 ,着重研究病灶增强情况并加以比较分析。结果　除 1例前列腺癌和 3例前列腺增生患者前列腺不大外 ,其余病例均有不同程度增大 ,所有前列腺癌和 1例前列腺增生患者前列腺形态不完整。动态螺旋CT增强扫描前列腺癌动脉期为等或略低密度灶 ,静脉期为低密度灶 ,10例前列腺增生患者动脉期显示中央区弥漫不均匀性强化 ,两侧叶区明显 ,静脉期显示中央区进一步强化 ,双期外周区未强化 ,中央区与外周区比例增大 ;1例前列腺外形不大的前列腺增生患者动脉期、静脉期中央区局限斑点状强化 ;8例前列腺增生患者行延时扫描 ,其前列腺中度均匀强化。结论　前列腺癌和增生的动态螺旋CT增强病灶密度变化有一定特征性 ,可资鉴别 ,有助于定性诊断 Objective To study the diagnosis of prostate cancer and hyperplasia by dynamic spiral CT and to improve the detection rate of CT on prostate diseases. Methods A total of 88 male patients with prostate diseases and other pelvic disorders underwent conventional plain scan and dynamic spiral CT contrast-enhanced scanning. The pathological confirmed and complete data of 5 cases of prostate cancer and 11 cases of benign prostatic hyperplasia were retrospectively reviewed. Situation and comparative analysis. Results In addition to 1 case of prostate cancer and 3 cases of benign prostatic hyperplasia in patients with small, the rest cases have increased to varying degrees, all prostate cancer and 1 case of benign prostatic hyperplasia in patients with incomplete shape. Dynamic spiral CT enhanced scan of prostate cancer is equal to or slightly lower density of arterial phase, low-density venous phase of the lesion, 10 cases of benign prostatic hyperplasia in the central area showed diffuse heterogeneity enhancement, both sides of the leaf area obvious venous phase showed the central The area was further strengthened. The peripheral area of ​​double stage was not strengthened, and the ratio of central area and peripheral area increased. One case of benign prostatic hyperplasia with small outline of the prostate was localized in the central part of the arterial phase and venous phase. Eight patients with benign prostatic hyperplasia had delayed time Scan, the prostate is moderately enhanced. Conclusions The dynamic spiral CT in prostatic carcinoma and hyperplasia has certain characteristic of the density change of the lesion, which can be identified and contribute to the qualitative diagnosis