CAJ | 학술논문

目的：探讨腹膜后去分化脂肪肉瘤(Dedifferentiated 1iposareoma,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。
목적：탐토복막후거분화지방육류(Dedifferentiated 1iposareoma,DDLS)적CT표현，이제고대해병적인식。방법회고성분석7례경병리증실적거분화지방육류적CT자료，7례균행CT평소급증강소묘。수차발병년령42-77세，평균54세，남4례，녀3례。결과4례표현위혼합밀도종괴，지방밀도종괴변견일연조직밀도종괴，2충성분지간분계청초；3례표현위연조직밀도종괴，류내지방성분소우10%。거분화성분，평소여연조직밀도상사，증강정현저불균균강화，유연지강화。결론 DDLS시일충소견류형적지방육류，CT표현구유일정특점，가위림상진단제공유개치적신식。
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.