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作 者:吴伟智 张家雄 彭加友 谢乐 WU Wei-zhi;ZHANG Jia-xiong;PENG Jia-you;XIE Le(Department of Radiology,Foshan Chinese Medicine Hospital Affiliated to Guangzhou University of Chinese Medicine,Guangdong 528000,China)
机构地区:[1]广州中医药大学附属佛山中医院放射科,广东佛山528000 [2]广州中医药大学附属佛山中医院病理科,广东佛山528000
出 处:《影像诊断与介入放射学》2021年第1期49-53,共5页Diagnostic Imaging & Interventional Radiology
基 金:佛山市重点专科培育项目(Fspy3-2015019)。
摘 要:目的探讨MRI对膝关节滑膜血管瘤的诊断及鉴别诊断价值。方法回顾性分析经病理证实的14例膝关节滑膜血管瘤患者的影像学资料,所有病例均行MRI平扫,其中增强扫描10例。结果局限型12例,弥漫型2例。病灶主体在T1WI上5例与骨骼肌信号相近,9例稍低于骨骼肌信号;在T2WI上12例介于骨骼肌与皮下脂肪信号之间,呈高、低混杂不均匀信号,7例可见“葡萄串”样改变;2例稍低于骨骼肌信号。8例病灶内部在T1WI及T2WI上可见粗大条状、迂曲状的低信号流空血管影,2例伴液-液平面。其中10例行增强扫描,病灶均呈中度或明显的不均匀强化,6例可见迂曲脉管样强化。10例病变边缘在T1WI及T2WI上可见完整或不完整的低信号包膜影。7例可见低信号的分隔。3例伴有局部骨质侵蚀破坏,2例伴有韧带受累。9例伴关节积液。1例见静脉石。MRI信号多样性反映了不同的病理组织成分。结论MRI能反映膝关节滑膜血管瘤的病理特点,对本病的诊断及鉴别诊断有重要价值。Objective To evaluate the MR imaging features of synovial hemangioma in the knee.Methods Plain(14)and contrast-enhanced(10)MRI of 14 patients with histologically confirmed synovial hemangiomas in the knees was retrospectively analyzed.Results The lesions were focal(12)or diffuse(2)with T1 isointensity(5)or slight hypointensity(9)relative to the adjacent skeletal muscle.On T2-weighted imaging,the lesion signal intensities were heterogeneously higher than skeletal muscle and lower than subcutaneous fat(12)resembling a bunch of grapes(7)or slightly lower than the skeletal muscle(2).Internal thick stripe or serpiginous vascular flow voids were seen on both T1-and T2-weighted images(8)accompanied by fluid-fluid levels(2).Of 10 contrast-enhanced MRI,all lesions showed moderate or marked heterogeneous enhancement with 6 lesions also demonstrating tortuous vascular enhancement.There were complete or incomplete hypointense capsules(10)and internal septa(7).Other findings included local bone erosion(3),ligament involvement(2),joint effusion(9),and phlebolith(1).Conclusion MR imaging features reflect the various histologic components of synovial hemangioma in the knee and aid clinical diagnosis and follow-up.
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