非特异性肉芽肿性前列腺炎的MRI表现  

MRI findings of nonspecific granulomatous prostatitis

作　　者：李亮[1] 蔡杰[1] 邓明[1] 冯定义[1] 彭莉[1] 常慧芳[2] 王良[1] 刘继红[3] 

机构地区：[1]华中科技大学同济医学院附属同济医院放射科,武汉430030 [2]华中科技大学同济医学院附属同济医院病理科,武汉430030 [3]华中科技大学同济医学院附属同济医院泌尿外科,武汉430030

出　　处：《放射学实践》2014年第5期496-499,共4页Radiologic Practice

基　　金：国家自然科学基金项目(81171307)

摘　　要：目的:探讨非特异性肉芽肿性前列腺炎的MRI表现特点。方法:8例经病理证实的非特异性肉芽肿性前列腺炎患者行T1WI、T2WI、扩散加权成像(DWI)及增强检查,回顾性分析其临床及影像学表现特点。结果:8例患者病灶均为结节灶,以右侧前列腺中部外周带多见(5/8)。病灶在T1WI上呈低、稍低及等信号,T2WI上主要为低及稍低信号,DWI上表现为高及稍高信号,表观扩散系数(ADC)图上呈局灶性低信号。4例患者行动态增强MRI检查,病灶明显强化,时间-信号强度曲线呈Ⅰ型(1例)或Ⅱ型强化(3例)。结论:非特异性肉芽肿性前列腺炎的常规MRI检查缺乏特异性,而动态增强扫描可能有助于该病的诊断及鉴别诊断。Objective：To evaluate MRI findings of nonspecific granulomatous prostatitis （NSGP）. Methods： Clinical and MR imaging findings of nonspeeific granulomatous prostatitis were retrospectively reviewed in 8 men confirmed by pa thology. Lesion shape, location and signal intensity （SI） were evaluated on T2-weighted imaging （T2WI）, diffusion-weighted imaging （DWI）, and dynamic contrast enhanced MRI （DCE-MRI）. Clinical findings and serum PSA levels were also evalua- ted. Results：Most lesions demonstrated slight hypo-intensity on T1WI and slight hypo-intensity on T2WI. On DWI, all le- sions （8/8） showed markedly high SI with decreased ADC value. Four cases showed enhancement after contrast injection in the cohort. The time-signal intensity curve （TIC） of NSGP showed a slow rise to a peak followed by a slow decline or a plateau （types Ⅰ andⅡ ）. Conclusion..Nonspecific granulomatous prostatitis has no signal specificity on conventional MR imaging,while dynamic contrast-enhanced MRI scans may be helpful in the diagnosis and differential diagnosis of the disease.

关 键 词：前列腺炎 前列腺肿瘤 磁共振成像 病理学 诊断 鉴别 

分 类 号：R697.3[医药卫生—泌尿科学] R445.2[医药卫生—外科学]