A right frontal lobe Grade III anaplastic PXA in a 51-year-old male with a predominantly cystic mass without an obvious mural nodule. (A) Axial T2WI showing the iso-intense cystic wall and homogeneous hyper-intense appearance of the cyst-like area. Obvious vasogenic edema surrounded the mass. (B) Contrast-enhanced axial T1WI showing the cystic wall with intense enhancement and the cyst-like area without enhancement. (C) DWI showing no evidence of restricted diffusion of the tumor.