小儿颅底脊索瘤的CT诊断

CT Diagnosis of the Skull Base Chordomas in Children

目的：探讨小儿颅底脊索瘤的ＣＴ表现和鉴别诊断。材料和方法：分析经活检或手术病理证实的８例小儿颅底脊索瘤的ＣＴ平扫和增强扫描表现。结果：发现肿瘤均起源于蝶枕软骨结合区，破坏斜坡和蝶骨，形成颅底鼻咽部肿块，肿块密度不均，内有散在营养不良性钙化。增强后肿块呈轻度非均匀性强化。结论：ＣＴ检查能够准确地发现肿块的起源，了解骨破坏和肿块内的钙化情况。

urpose:To explore CT appearances and differential diagnosis of the skull base chordomas in children.Materals and Methods:The features of the plain and contrast enhanced CT scans of 8 cases of the skull base chordomas verified by biopsy or surgical-pathology were analyzed.Results:All chordomas arised from the region of the sphenooccipital synchondrosis,svere shown to have nasopharyngeal heterogeneous masses with distrophic calcification,after intravenous injection of contrast medium.Conclusion:CT scans could identify the location of the tumors and bony destruction and calcification accurately,and give a correct diagnosis and differential diagnosis immediately.