CT diagnosis and differential diagnosis of solitary fibrous tumors in thorax and abdomen

Objective To investigate the CT performance of thoracic and abdominal solitary fibrous tumor(SFT)and to improve the understanding of this disease.Methods We retrospectively analysed the CT features of 5patients with SFT occurred in thorx and abdomen,which were confirmed by operation and pathology.Results In these 5cases,1case occurred in lung,1in pleura,1in the anterior mediastinum.Peritoneal cavity was found in 1case and 1case was in retroperitoneal site.All of the cases showed clear border,irregular shape,4cases showed lobulated signs,one case presented with pedicle.The maximum diameter was from 6.1cm to 12.7cm.CT plain scan was that 5cases presented with homogeneous density,2cases with calcification.On enhanced CT,4cases showed heterogeneous and significantly enhancement,enhanced amplitude with(45~90)HU,thickening and tortuous vascular shadow were also seen inside tumor.Conclusion CT examination has certain characteristics of SFT.In some abdominal and pelvic SFT cases,when the abdominal aorta participates in blood supply to the tumor,it's also helpful to differential diagnosis ofreproductive system tumors.