For benign tumors. CT features are to have clear and sharp edge, in addition, nearly one third of cases accompanied with intra - phyma rounded liquefaction.

• 用CT进行扫描,结果:肿块的CT特征为:良性肿瘤表现为边缘清楚、锐利,并有1/3的病例伴有肿块内圆形液化;