Radiographic Diagnosis of Spinal Solitary Fibrous Tumor / 中国医学影像学杂志

ABSTRACT

Purpose To explore the CT and MRI manifestations of spinal solitary fibrous tumor (SFT) to improve the accuracy of imaging diagnosis.Materials and Methods CT and MRI manifestations of eight pathologically confirmed SFT were retrospectively analyzed.CT and MRI scan were performed in 8 cases.The location,shape,size,density/signal,margin,condition of the internal lesion,adjacent bone destruction and reinforcement characteristic were also analyzed.Results Of the 8 patients,4 cases were pathologically confirmed benign and the other 4 cases were malignant.6 cases showed trans-intervertebral foramen dumbbell shaped soft tissue masses,1 case showed lobulated soft tissue mass lying outside the invertebrate canal and 1 case showed long fusiform lying in intradural extramedullary of spinal canal.6 cases had adjacent bone swelling or osteolytic destruction,1 case had compressive bone defect,and 1 cases showed no obvious bone destruction.The tumor showed an equal/mixed density on CT scan.T1WI equal/low signal was seen in MRI scan.Equal/slightly higher T2WI signals were seen in 6 cases and mixed signals in 2 cases.All patients undergoing enhanced scan showed obviously inhomogeneous enhancement.Conclusion Spinal solitary fibrous tumors are lobulated or dumbbell shaped and growth clinging to or surround the dura mater.The feature of MRI signal is evident that T1WI is mostly equal/low signal and T2WI is usually slightly higher/equal signal,often accompanied by bone destruction.