Abstract:Objective To investigate the imaging features and pathological data of solitary fibrous tumor (SFT)/hemangiopericytoma (HPC) in spinal canal, so as to improve the diagnosis of such diseases. Methods The CT, MRI and pathological data of 7 cases of intraspinal SFT / HPC confirmed by pathology were retrospectively analyzed. Results This study included 3 WHO Grade II cases (42.8%), 3 WHO Grade I cases (42.8%), and 1 WHO grade III case (14.3%). The expression level of Ki-67 in WHO grade I was lower than that in WHO grade Ⅱ and Ⅲ. There were 6 cases of single lesion and 1 case of multiple lesion. CT plain scan showed equal density. MRI plain scan T1WI showed equal signal. T2WI usually shows uniform and slightly lower signal, and uniform enhancement after enhancement is obvious, which may be complicated with hemorrhage and cystic change. WHO Grade III lesions showed adjacent bone destruction. Conclusion The SFT/HPC in the spinal canal has characteristic imaging findings and has certain differential significance from other common tumor lesions in the spinal canal