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游离齿状突(齿状突小骨)(Os Odontoideum)CT多平面重建病例印象确诊剖析

时刻:2010-11-05  来历:ACR 05-6-30  作者:freemanpyw译 【仿制共享】【谈论-纠错】【告发

 【临床病史】:患者,女人,31岁,发作机动车辆事端。31-year-old woman involved in a high-speed motor vehicle collision.ieK印象园cn-diwater.com

印象CT MPR图画


ieK印象园cn-diwater.com

ieK印象园cn-diwater.com

印象体现】:The coronal CT neck image in Figure 1 shows a small, round os odontoideum (red arrow) separated from the body of C2 (blue arrow) by a wide radiolucent gap. It has smooth and uniform cortical margins.冠状位CT显现一个小圆形的齿突(红箭),与颈2椎体别离(蓝箭),皮质边际均匀滑润。ieK印象园cn-diwater.com

ieK印象园cn-diwater.com
ieK印象园cn-diwater.com
The sagittal CT neck image in Figure 2 shows signs of C1 anterior arch hypertrophy (green arrow). There is no paravertebral swelling. The posterior atlanto-dens interval (PADI) also known as the space available for cord (SAC) is 12mm (less than 13mm has a poor prognosis).ieK印象园cn-diwater.com

矢状位的CT显现颈1椎体前弓肥壮(绿箭),无显着椎旁肿胀。后方寰齿间隔(又称脊髓可用空间)约12mm(小于13mm预后不良)ieK印象园cn-diwater.com

ieK印象园cn-diwater.com

印象确诊】:Os Odontoideum 游离齿状突(齿状突小骨)ieK印象园cn-diwater.com

【确诊关键】:Os odontoideum is a small round or oval corticated ossicle superior to the body of C2 游离齿状突是坐落C2椎体上方的小圆形或卵圆形的皮质小骨。ieK印象园cn-diwater.com

    Etiology is most likely post-traumatic failure of fusion of the ossification centers of the C2 body and dens. 伤口后导致C2椎体和齿状突骨化中心交融失利是最或许的病因。ieK印象园cn-diwater.com

    Radiographic features include C1 anterior arch hypertrophy and a wide radiolucent gap between the ossicle and C2 which lies above the level of the superior facets of the axis www.188bet.com学特征包含C1前弓肥厚,齿状突和C2椎体之间广大的透光性缺口,坐落枢椎上关节突上方。ieK印象园cn-diwater.com

    Serious sequelae include spinal cord compression and death 严峻的后遗症包含脊髓压榨症和逝世。

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