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目的 进一步分析和探讨小肝癌的CT表现及其病理基础。方法 收集经手术病理证实的小肝癌 31例。CT采用双期、部分三期增强扫描 ,与病理对照。结果 动脉期 73% (11/ 15 )肿瘤呈高密度 ;门静脉期 6 5 % (2 0 / 31)呈低密度 ,35 % (11/ 31)呈高或稍高密度 ,其中 8例延迟后平衡期呈低密度。 11例有低密度区。 16例手术病理报告肿瘤包膜完整 ,5 6 % (9/ 16 )CT显示肿瘤边缘清楚 ;2 0 % (3/ 15 )无包膜者CT显示肿瘤边缘清楚。结论 门静脉期肿瘤呈高密度时加扫平衡期扫描有助于小肝癌的定性诊断
Objective To further analyze and discuss the CT findings and pathological basis of small hepatocellular carcinoma. Methods 31 cases of small hepatocellular carcinoma confirmed by operation and pathology were collected. CT uses double-phase and partial three-phase enhanced scans, which are compared with pathology. Results In the arterial phase, 73% (11/15) of the tumors showed high density; 65% (20%) of the portal vein phase had a low density, and 35% (11/31) had a high or slightly high density, 8 of which were delayed and balanced. The period is low density. Eleven cases had low density areas. In 16 cases of tumors, the tumor capsules were complete, 56% (9/16) CT showed clear edges of the tumor, and 20% (3/15) of non-enveloped CT showed clear tumor margins. Conclusion When the portal vein tumor is in high density, scanning with balanced scan is helpful for the qualitative diagnosis of small hepatocellular carcinoma.