CD34 and meningioma: No statistically significant difference was seen when comparing sensitivity (SE) and specificity (SP) of each immunohistochemical marker (ALDH1 or CD34), for the diagnosis of SFT versus meningioma (p = 0.617 for SE and p = 0.114 for SP) or HPC versus meningioma (p = 0.264 for SE and p = 0.114 for SP).