Computed tomography (CT) scan demonstrated a large, well-defined retroperitoneal mass with heterogeneous attenuation appearance and areas of low density showing as fatty substance.

• 电脑断层摄影发现一个巨大的肿瘤在后腹腔，边绿清晰，内部呈现不同质的状态，对注射造影剂后并无明显的增强作用，而且含有脂肪的成份。