CT diagnosis of solitary fibrous tumor of abdomen and pelvis

Objective To explore the CT signs of solitary fibrous tumor(SFT) of abdomen and pelvis so as to further improve the understanding of this disease.Methods The CT performance of 11 cases of SFT of abdomen and pelvis confirmed by operation and pathology was retrospectively analysed in this work.Results Of these 11 patients,6 occurred in abdomen and 5 cases in pelvis.Tumor volume was about 4.6 cm×4 cm×3.0 cm~10 cm×14 cm×21.3 cm.As for the morphology,9 patients appeared as oval,2 presented with irregular shape,10 with clear border,1 with unclear edge,2 pelvic tumors with pedicle.4 cases showed slight homogeneous low density on CT scan,7 cases showed low mixed density,of which 2 cases presented with punctate calcification within the lesion,3 cases showed homogeneous enhancement on enhanced scan,8 cases showed heterogeneous enhancement,3 patients with moderate and marked enhancement,in which the scattered mild enhancement patchy and longitudinal cable strip film were seen in masses,5 cases showed mild to significant heterogeneous enhancement in the arterial phase.The substantive part was further strengthened in the portal phase,in which line shape,patchy and flaky within no enhancement area,thickening and tortuous vascular shadow were also seen.Conclusion CT manifestations of SFTumor of the abdomen and pelvis possess certain characteristics,the final diagnosis,however,still needs to combine the CT signs with pathology and immunohistochemistry.