局灶性肝紫癜病的CT表现(附1例报告并文献复习)

CT manifestation of focal peliosis hepatis(with one case report and literature review)

目的探讨肝紫癜病(PH)的CT特征。方法对本院1例及文献报道9例共10例有完整CT影像资料并经病理证实为局灶性PH病例进行分析。结果 10例CT平扫均为低密度,增强扫描动脉期有9例病灶有不同程度不均匀强化,1例病灶未见强化;门静脉期及延迟期扫描所有病例均见不同程度持续强化,其中5例(5/10)为不均匀斑片状强化,1例(1/10)为离心性强化(靶心征),4例(4/10)为向心性强化(靶环征),2例(2/10)可见线样血管状强化。结论局灶性肝紫癜病CT表现随多期动态增强扫描病灶具有不同程度持续性强化特征,其中向心性强化(靶环征)或离心性强化(靶心征)是其较为特征性表现,对PH诊断有较好提示作用。

Objective To explore the computerized tomography （CT） feature of peliosis hepatis （PH）. Methods A total of 10 cases confirmed by pathology as focal PH, including one in our hospital and 9 ones via literature reports, were analyzed by means of com- plete CT image data. Results All the 10 cases showed low density in CT fiat sweep. In the enhanced scan, different degree of une- ven reinforcement of arterial lesions was found in 9 cases and the other one was not seen strengthening. In portal venous phase and delayed phase scan, all the cases seen continued strengthening at different levels, including 5 cases （5/10） of non-uniform patchy enhancement, one （1/10） of annulare enhancement （bull＇s eye sign）, 4 （4/10） of centrality of intensive rings, and 2 （2/10） of sample line blood vessel reinforcement. Conclusion Focal PH, with CT multiphase dynamic enhanced scanning, is characterized by strengthened lesions with different degree, especially by centrality of strengthening （rings） or annulare strengthening （ bull＇ s eye sign） , which are good implications for the diagnosis of the disease.