腹膜后去分化脂肪肉瘤的CT诊断(附7例报道及文献复习)  

CT Diagnosis of Retroperitoneal Dedifferentiated Liposareoma

作　　者：闻芳[1] 胡春洪[1] 胡粟[1] 戴启春[1] 

机构地区：[1]苏州大学附属第一医院影像中心,江苏苏州215006

出　　处：《中国CT和MRI杂志》2014年第4期39-41,共3页Chinese Journal of CT and MRI

摘　　要：目的探讨腹膜后去分化脂肪肉瘤(Dedifferentiated1iposareoma,DDLS)的CT表现,以提高对该病的认识。方法回顾性分析7例经病理证实的去分化脂肪肉瘤的CT资料,7例均行CT平扫及增强扫描。首次发病年龄42-77岁,平均54岁,男4例,女3例。结果4例表现为混合密度肿块,脂肪密度肿块边见一软组织密度肿块,2种成分之间分界清楚;3例表现为软组织密度肿块,瘤内脂肪成分小于10%。去分化成分,平扫与软组织密度相似,增强呈显著不均匀强化,有延迟强化。结论 DDLS是一种少见类型的脂肪肉瘤,CT表现具有一定特点,可为临床诊断提供有价值的信息。Objective To investigate the value of CT in the diagnosis of dedifferentiated 1iposareoma. Methods The CT features and the corresponding pathological basis of 7 cases were analyzed. 7 cases were examined by CT plain scanning and contrast enhancement scanning. First onset age 42-77 years, mean 54 years, 4males and 3 females. Results The CT appearances were as follows： a well delineated fatty component in the lesion and a closely apposed non-fatty region in 4 cases, which depicted an abrupt transition from the well-differentiated area to the high-grade sarcoma component under microscope;fatty component within the lesion was less than 10% in 3 cases. Contrast enhanced CT scan showed moderate to marked inhomogeneous enhancement in the early phase in all 7 lesions, and delay enhancement was also observed. Conclusion Dedifferentiated 1iposareoma is rare, CT performance has certain features and can provide more helpful information for the clinical diagnosis.

关 键 词：脂肪肉瘤 去分化型 CT 病理 

分 类 号：R656.5[医药卫生—外科学]