Malignant Fibrous Histiocytoma of Liver:Two Case Report and Literature Review

Objective:To enhance the understanding of the clinical diagnosis of hepatic malignant fibrous histiocytoma(MFH).Methods:2 cases of hepatic malignant fibrous histiocytoma proven by postoperative pathology were examined by means of CT and MRI,and 14 pertinent literatures were reviewed.Results:Tumors of two patients revealed infiltrative growth and were located in the right lobe of the liver.The marginal contours were irregular.On CT,all tumors were hypodense(2440 Hu) on plain scan,and asymmetrical hyper dentisites in parenchyma of mass were seen in arterial phase after contrast injection.On MRI,the main signal intensity of large mass were hypointense on T1WI and hyperintense on T2WI.Asymmetrical signal,and obscure boundary and irregular shape were discovered.On dynamic enhancement scanning,asymmetrical hyper dentisites in parenchyma of mass were showed in arterial and venous phase.On the other hand,the intensification decreased in the majority field and lamellar intensification sustained in partial field in lag period.Conclusion:It is difficult to make right clinical diagnosis of hepatic MFH.The primary imaging character of hepatic MFH is apparently invasive with unclear border.There are not characteristic imaging of MFH.