小儿肝脏母细胞瘤的CT诊断

CT Diagnosis of Hepatoblastoma in Children

目的:总结肝脏母细胞(HB)瘤在CT上的形态学特征。方法:对5例经手术病理证实的HB瘤病例进行腹部CT平扫,3例加作增强扫描,结合文献分析HB瘤的CT表现。结果:肿物位于肝右叶3例,肝左叶1例,肝左右叶1例。HB瘤大多表现为肝内单个球形或分叶状融合的实性肿块,1例为多发结节。2例肿物呈外生型,4例边缘清楚,3例包膜完整。肿瘤密度多不均匀,2例可见点状钙化,增强后可不均匀或弧线形、网格状强化。全部病例肿瘤以外肝实质正常。1例见下腔静脉瘤栓,1例见腹膜后淋巴结及大网膜转移。结论:HB瘤的CT表现有一定特异性,对于诊断帮助较大。

Objective To analyze the CT findings characteriatics of hepatoblastoma in children, Methods 5 cases of hepatoblastoma comfirmed by operation and pathology with CT scaning/enhancement in 5/3, To analyze the CT findings of hepatoblastoma. Results 3 tumors mvolved the right lobe , 1 tumor mvolved the left lobe , and 1 both liver lobes. Most of hepatoblastoma appeared as an mtrahepatic well-circumscribed round or lobulated solid mass with or without paeudocaosule, one of them marufested as multiple modules and diatrobuted in one or both liver lobes. Exophytic growing of tumor was seen on 2 cases . The tumor mass usually exhibited mhomogeneous density and heteingeneous enhancement , some associated with reticular and curbilinear density, Peripheral rim enhancement was present in 3 cases. Calcified Foei were lound in 2 cases. The hepatic parenchyma outside the tumor was normal in all cases. Rare findinha included tumor thrombus in one case in IVC. lymphnode melastasis in one case. Conclusion The CT findings has some charaeteriatics of hepatoblastoma in children , That are valuable for radiologists to distinguish.