CD34 and solitary fibrous tumor: Histologically, SFT phenotype mimics fibromeningioma, while HPC phenotype mimics high-grade meningioma or sarcoma.[5] The clinical behavior of tumors with SFT phenotype is usually benign, while the clinical behavior of tumors with HPC phenotype is malignant, and has a high recurrence rate and metastasis rate.[17,18] Although CD34 and EMA have been used to differentiate SFT from meningioma; However, CD34 and EMA lack high sensitivity and specificity.