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Imaging diagnosis of aneurysmal bone cyst secondary to giant cell tumor
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF RADIOLOGY
- Issue:
- 12
- DOI:
- 10.3760/j.issn:1005-1201.2007.12.004
- Key Word:
- 巨细胞瘤,骨;骨囊肿,动脉瘤样;诊断显像
Abstract： 目的 提高骨巨细胞瘤(GCT)继发动脉瘤样骨囊肿(ABC)的认识和影像诊断水平.方法 搜集经手术病理证实的12例GCT继发ABC的X线、CT、MRI和病理学资料,分析和总结其影像征象.结果 12例中6例病变发生于长管状骨,6例发生于盆骨.12例病变X线均表现为囊状膨胀性溶骨性骨破坏,10例呈偏心性破坏,2例为中心性破坏;4例病灶内出现骨性分隔,6例骨皮质中断,4例出现软组织肿块,有明显硬化边者2例.10例行MR平扫和增强检查,均呈多囊的囊实性膨胀性肿块,8例为边缘性实性结节,2例为实性基础上的广泛囊变,全部患者均可见多个液-液平面,7例出现软组织肿块;1例肿块内可见局灶性含铁血黄素沉着.8例行螺旋CT平扫、增强、CT血管成像(CTA)和三维(3D)多平面重组(MPR),病变显示为囊实性肿块,骨皮质破裂并形成软组织肿块5例,6例肿块内出现液-液平面,全部肿块实质性部分和囊壁明显强化,囊性部分不强化,3例肿块内可见增粗迂曲的供血动脉,未发现动静脉畸形.12例手术所见和术后病理显示肿块均由多发含血的囊腔和实性部分组成,病理诊断结果均为GCT伴发ABC,其中Ⅱ级GCT10例,Ⅲ级2例.结论 GCT伴发ABC并不少见,充分理解其病理组织学基础,并选择恰当的影像检查方法(X线+MRI或X线+CT)对其正确诊断非常重要.
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