CT and MRI Features of Intracranial Solitary Fibrous Tumor(Report of 2 Cases and Literature Review)

Objective To explore the imaging and pathology features of solitary fibrous tumor(SFT).Materials and Methods The clinical data and imaging findings of 2 patients with SFT proved by operation and pathology were retrospectively analyzed.Results The lobulated tumors were located in left parietal lobe and cerebellum.The two tumors showed iso-density on plain CT images.The tumor located at left parietal lobe showed iso-intensity on T1WI,hyper-intensity on T2WI and large areas of edema,The tumor located at cerebellum showed iso-intensity on T1WI,hypo-intensity on T2WI and vascular flow void signal.The two tumors showed obviously enhanced on contrast CT and MR.Under the microscope,the tumor cells were spindle,bundle or a Wavy distribution,mixed with abundant collagen fibers.Positive immunohistochemistry staining showed Vimentin(+),CD34(-)or(+).Conclusion cerebral SFT has some characteristics on MRI,yet final diagnosis should be based on histopathology and immunohistochemistry examinations.