Objective To investigate the CT and MRI findings and pathological features of hepatic perivascular epithelioid cell tumor(PEComa)so as to improve diagnostic accuracy.Methods The imaging data of 8 cases confirmed as hepatic PEComa were analyzed retrospectively,including the lesion morphology and its internal imaging features and contrast enhance-ment characteristics.And then,a correlation analysis with pathology and review of relevant literatures were conducted.Results A total of 8 cases(100％)with hepatic PEComa had single lesions,of which 7 cases(87.5％)had well-defined margins,with an average of 4.5cm in size,and 4 cases(50.0％)had Internal heterogeneity,and fat components were shown in 4 cases(50.0％).Among them,2 cases(25.0％)contained a lot of fat,5 cases(62.5％)showed vascular malformation,and bleed-ing,necrosis or calcification was not shown in all of 8 cases(100％).The enhancement pattern was"rapid-filling and rapid-washout"in 4 cases(50.0％),"rapid-filling and slow-washout"in 2 cases(25.0％)and"continuous enhancement"in 2 cases(25.0％),respectively.Conclusion Hepatic PEComa is common in women,and most of them have single lesion.CT and MRI images show well-defined margins,internal heterogeneity,or fat-containing and malformed blood vessels,and various en-hancement pattern.
维普
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