On CT plain scans,the tumors were slightly hyperdense in 9 cases,isodense in cases and inhomogeneous density in casesCT平扫肿瘤稍高密度9例,等密度例,混杂密度 例,内伴斑片低密度灶及囊性变8例,有斑点状及斑片状钙化 例,CT增强扫描多强化明显。