摘要
目的 分析总结小儿肝脏未分化性胚胎性肉瘤的CT表现特点 ,以提高对本病的认识 ,从而能够早期诊断、积极治疗。方法 回顾性分析 6例未分化性胚胎性肉瘤 (UES)的临床、病理及影像特征 ,并结合文献加以讨论。 6例患儿行腹部平扫 ,5例并行增强扫描。结果 平扫显示病灶边界清楚 ,3例病变为单囊 ,3例为多房囊腔 ,内有厚薄不均的分隔。囊性区内可见少许不规则软组织密度影 ,位于囊腔边缘或分隔周围。 1例于病灶边缘见针尖样钙化。增强后 ,可见肿瘤有一致密的周边 ,即病理上的纤维假包膜。实性部分轻度强化 ,囊性区不强化。 4例超声图像表现为混合回声的实性包块内可见大小不等的无回声区。 6例均经病理证实。结论 CT多表现为单囊或多囊性病灶 ,边界清楚 ,内有不同程度的实性部分 ,可见强化边。而超声图像则多表现为实性为主 ,其不一致性亦为本病的重要特点。
Objective To improve the diagnostic level by analysing and the CT features of undifferentiated embryonal sarcoma of liver(UES) in 6 cases all proved by pathology. Methods We retrospectively reviewed the clinical,pathologic,and imaging features in 6 cases.6 cases underwent unenchanced CT scan,5 case enchanced CT Results CT scan revealed a large uniloculated cyst in 3 and multiloculated cyst within hyperdense septations of variable shapes and thickness in 3.The margins of the lesions were well defined. Some solid portions at the periphery or adjacent to the septa were found in all cases. Punctate calcification at the periphery of the lesion was found in 1 case. A thin rim was seen surrounding the cystic tumor in all cases corresponding to the pathologic psedcapsule. The solid portions and the psedcapsule of the tumor had increased attenuation values and the cystic areas showed low attenuation after injection of contrast material. US demonstrated a single echogenic mass within some anechoic spaces of variable size in 4 cases. Conclusion CT scan showed well defined uniloculated or multiloculated cyst within variable amount of solid portions and an enhancing rim and predominantly solid at US. Discrepancy of internal architecture between US and CT was one of the important characteristic of UES.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2001年第5期380-382,共3页
Chinese Journal of Radiology
