骶骨骨巨细胞瘤X线、CT及MRI表现

目的分析骶骨骨巨细胞瘤(GCT)的X线、CT和MRI表现特点,探讨三种影像检查方法的临床应用价值。资料与方法 21例骶骨GCT均经手术病理证实,所有病例均行X线、CT和MRI检查,分析骶骨GCT的X线平片、CT、MRI表现特点,将影像学表现与手术病理结果进行对照,并经双盲法分析确认。结果 21例中,X线和CT显示囊性膨胀性骨质破坏18例,溶骨性骨质破坏15例,骨包壳不完整14例,MRI显示骨质破坏10例。X线显示侵犯骶髂关节及髂骨5例,CT显示16例,MRI显示11例。CT平扫显示软组织肿块12例,CT增强显示16例,MRI显示16例,其中巨大囊实性软组织肿块12例,10例可见液平面,病灶周围可见软组织水肿及骨髓水肿。骨质破坏在MR SE T1WI上呈等低信号,T2WI呈等信号。骨包壳在MRI上表现为低信号,X线和CT上表现为硬化环。软组织肿块实性部分在T1WI为等信号,T2WI及短时反转恢复(STIR)呈等高信号。囊性部分在T1WI为低信号,T2WI及STIR呈等高信号。软组织水肿及骨髓水肿在T2WI及STIR呈高信号。CT和MRI增强软组织肿块实性部分明显强化,囊性部分不强化。结论 X线、CT和MRI从不...

X-ray,CT and MRI Findings of Giant Cell Tumor of Bone in Sacrum

Objective To study the X-ray,CT and MRI features of giant cell tumor of bone in sacrum and to evaluate their clinical value.Materials and Methods 21 cases of giant cell tumor of bone in sacrum were proved by surgery and pathology.All of the patients were examined by X-ray,CT and MRI.The imaging manifestations including X-ray,CT and MRI were analyzed,and the relationship of the imaging features with the pathological types of giant cell tumor of bone in sacrum was also observed.The imaging features were compa...