MSCT features of thoracic solitary fibrous tumor

Objective:To investigate the MSCT features of thoracic solitary fibrous tumor(SFT).Methods:The MSCT images and clinical materials of 13 patients with SFT were retrospectively analyzed.The location,size,shape,density,enhancement pattern and feeding vessels were studied and compared with pathology.Results:Of the 13 cases with SFT,4cases located in the left and 6cases in right,3cases located in mediastinum.The largest dimension ranged from 2.2cm to13.6cm(average 5.4cm).The SFTs were oval or irregular in shape with clear margin in 8cases and ill-defined in 5cases.The lesions showed iso-density in 4cases and heterogeneous density in 9cases,some of the tumors had calcification and necrosis.Of the 11 cases underwent enhanced CT,2cases had no obvious enhancement on arterial phase but were mildly enhanced on venous phase,4cases were moderately and heterogeneously enhanced on arterial phase and less intensive on venous phase,5cases were mildly to moderately enhanced and much more intensive on venous phase.Feeding arteries such as intra-thoracic arteries,bronchial arteries or celiac trunk could be display on reformatted images.Conclusion:MSCT findings of thoracic SFT have certain characteristic features,mostly showed as soft tissue mass with well-defined margin,rich in blood supply and progressive heterogeneous enhancement.Feeding arteries and lesions could be clearly displayed on CT,provide helpful information for clinical treatment.