The pathological features and MRI findings of soft tissue myxofibrosarcoma
10.3969/j.issn.1002-1671.2018.03.023
- VernacularTitle:软组织黏液样纤维肉瘤的病理及MRI表现
- Author:
Da LIN
1
;
Xiaohui HUANG
;
Jie YU
;
Xuming LIU
;
Qiande QIU
Author Information
1. 温州市人民医院影像科
- Keywords:
myxofibrosarcoma;
histopathology;
magnetic resonance imaging
- From:
Journal of Practical Radiology
2018;34(3):411-414
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the features of soft tissue myxofibrosarcoma (MFS)on MRI.Methods The MRI data of 15 cases with MFS confirmed by surgery and pathology were analyzed retrospectively.Results Of all the 1 5 cases,7 were located in the thigh,3 were located in the lower leg,2 were located in the forearm,1 was located in the shoulders,1 was located in the back and 1 was located in the buttocks.The average maximum diameter of all lesions was (9.43±3.1)cm.Fifteen cases showed isointensity with slightly hypointensed fiber septa on T1WI.The signal intensity of MFS on T2WI was mixed.Five cases of low-grade MFS with myxoid area showed slightly hyperintensity,with sporadic small nodular and striped fibrous septa which showed hypointensity on T2WI and inhomogeneous enhancement.In 5 cases of high-grade MFS,the solid part and the septa showed hypointensity on T2WI;the myxoid matrix area and the necrotic area showed hyperintensity on T2WI.The myxoid matrix part showed mild inhomogeneous enhancement with peritumoral enhancement of"tail sign".Among the 5 cases,the solid part of 4 cases showed middle to severe annular heterogeneous enhancement,while the solid part of the remaining 1 case showed nodular enhancement.Five cases of intermediate-grade MFS showed slightly hyperintensity or isointensity on T2WI,and nodules and fibrous septa showed hypointensity.The enhanced solid part and myxoid matrix area showed mild to moderate inhomogeneous enhancement,and there were 2 cases with"tail sign".Conclusion MRI features of soft tissue myxofibrosarcoma have some characteristics including isointensity on T1WI,mixed signal intensity on T2WI,heterogeneous enhancement and peritumoral enhancement of"tail sign".
