Results:CT sacn showed a round lobular hypodense or isodense mass surrounded by marked perifocal edema.There may be mass effect,dural tail shape and homogenous contrast enhancement.

• 结果：2例CT显示单发圆形或类圆形分叶状低、等密度肿块,伴有灶周水肿、占位效应和硬膜尾征，呈均一强化。