垂体脓肿MRI分析

目的 探讨垂体脓肿的MRI表现,提高对垂体脓肿的认识和诊断水平.方法 回顾性分析8例经手术病理和临床抗炎治疗证实的垂体脓肿的临床及MRI资料,并结合文献分析其MRI特征性表现.8例中,男3例,女5例,平均年龄53.3岁(36~62岁).病程7 d~4个月.结果 MRI平扫均显示垂体增大,T1WI等信号6例,稍高信号2例;T2WI等信号4例,高信号2例,等高混杂信号2例;1例行DWI检查显示脓肿为高信号.增强后8例均表现为周边环形强化,6例壁厚并略呈分层状,7例垂体柄增粗并明显强化.结论 垂体脓肿具有较典型的MRI征象.

Pituitary Abscess:MRI Analysis

Objective To discuss the MRI characteristics of pituitary abscess,so that to improve the diagnosis of it.Methods MR imaging data in 8 cases with pituitary abscess proved by operation and pathology,and antibiosis therapy were retrospectively analyzed in combination with review of literatures.Of 8 cases,3 were male and 5 were female,the mean age was 53.3 years(ranged 36~62 years).Results MRI findings included hypophysis enlargement,isointensity in 6 cases and slight hyperintensity in 2 cases on T1WI;isointensity in 4,hyperintensity in 2 and mixed iso-and hyperintensity in 2 on T2WI;hyperintensity in one on DWI.On contrast-enhanced scan,all pituitary masses showed ring enchancement,6 cases showed thickened walls which were slightly lamellar;7 cases demonstrated pituitary stalk thickening and enchancement.Conclusion Pituitary abscesses are of certain typical MRI characteristics.