【摘要】 目的探讨原发性腹膜后脂肪肉瘤的CT表现及鉴别诊断要点。方法回顾性分析经手术病理证实的32例原发性腹膜后脂肪肉瘤的CT资料,32例均行CT平扫及增强扫描。结果①肿瘤大小约8～30cm,肿瘤的形态绝大多数不规则,所有肿瘤均位于腹膜后间隙。②32例脂肪肉瘤中,20例肿块中含有典型的脂肪成分,其CT值为-20～-130 Hu。增强扫描时肿块内的脂肪成分无强化,软组织成分轻度强化。结论 CT在原发性腹膜后脂肪肉瘤的定位诊断以及判断肿瘤与邻近器官的关系方面具有十分重要的价值,而且对高分化型脂肪肉瘤或含脂肪的其他类型脂肪肉瘤能够明确诊断。更多还原

【Abstract】 Objective To discuss CT appearances of primary retroperitoneal liposarcomas and the differentiated points. Methods The CT findings of 32 cases with primary retroperitoneal liposarcoma proved by operation and pathology were analyzed retrospectively. Thirty-two cases were examined by CT plain scanning and contrast enhancement scanning preoperatively. Results The size of 32 liposarcomas ranged from 8 to 30cm. The shape of liposarcoma was irregular. And all tumors were located in the retroperitoneal space. Of 32 liposarcomas, 20 cases had huge heterogeneous masses with fat attenuation, and the CT value of them was from-20 to-130 Hu. On CT contrast, the fat was not enhanced, the soft tissue component was slightly enhanced. Conclusion CT plays an important role in the precise localization of primary retroperitoneal liposarcoma and determination of the extent of invasion and charac-terization of some specific pathologic types such as well-differentiated liposarcoma, myxoid liposarcoma.更多还原