摘要
目的探讨色素沉着绒毛结节性滑膜炎的MRI表现特征和MRI诊断价值。方法回顾分析经手术和病理证实的5例色素沉着绒毛结节性滑膜炎的MRI图像,全部病例采用SE序列和注射钆喷酸葡胺增强扫描。结果1例局限型表现为关节囊结节状不规则增厚;4例弥漫型表现为关节旁葡萄串状囊性或囊实性包块,内有不规则结节,结节在T1、T2WI表现为低信号,囊液T2WI呈高低混杂信号、T1WI呈等信号,包块半包绕关节囊及邻近骨生长;增强扫描绒毛结节及囊壁均匀强化,囊液信号变低。结论色素沉着绒毛结节性滑膜炎具特征性MRI表现,MRI可作出确诊。
Objective To determine the MR imaging features of pigmented villonodular synovitis (PVNS) of joints and to assess their diagnostic value.Methods Five patients with surgically,pathologically proven PVNS underwent spin echo(SE) sequence and Gd-DTPA enhanced MR imaging.MR examinations in all patients were analyzed retrospectively.Results One case with localization-type presented the nodular-irregular thickning of joint-capsule and four cases with diffusion-type presented botryoidal cystic masses and/or cystic-solid masses of joint periphery,in which irregular nodules were of hypointense on T1WI and T2WI,cystic fluid was of heterogeneous intense on T2WI and isointense on T1WI,the growth of masses surrounded half joint-capsule and neighbor bone.Following Gd-DTPA enhanced scans,the villiform nodules and the cystic walls were of homogeneous enhancement whereas cystic fluid was of hypointense.Conclusion PVNS have consisted MRI features that can provide the significant informations for correctly diagnosing this disease.
出处
《实用医学影像杂志》
2002年第2期126-128,共3页
Journal of Practical Medical Imaging
