CT and MRI findings of liver primary undifferentiated pleomorphic sarcoma / 中国医学影像技术

ABSTRACT

Objective To investigate CT and MRI characteristics of liver primary undifferentiated pleomorphic sarcoma (UPS).Methods Data of 8 cases of pathologically confirmed liver UPS were analyzed retrospectively.Results The tumors located in right liver (n=6),left liver (n=1) or caudate lobe (n=1).Irregular shape and ill-defined boundary were found in 6 cases,while regular shape and well-defined boundary were found in the other 2 cases.The lesions in 7cases showed heterogeneous density,and demonstrated homogeneous density in 1 case.Slight heterogeneous enhancement in arterial phase and progressive enhancement in portal phase were observed in all 8 cases,while continuous enhancement was observed in 6 cases.Tumor thrombi in inferior vena or portal vein were observed in 4 cases.Conclusion CT and MRI manifestations of primary liver UPS are characteristic in certain degree,therefore being helpful to the diagnosis of this disease.