Figure 4.

Typical radiologically misdiagnosed cases. The four graphs in row were T2WI in axial view, CE-T1WI in axial and coronal view, and pathological image, respectively. Lesions in Cases (A,B) were supratentorial, posterior, and close to midline in location with internal serpentine signal voids, and absence of peritumoral edema on T2WI; irregular shape, unclear margin, and absence of the dural tail sign on CE-T1WI. Enhancement in Case (A) was heterogeneous, while in Case (B), it was homogeneous. Lesions in Cases (C,D) were supratentorial and lateral in location with extensive peritumoral edema on T2WI; homogeneous enhancement, regular shape, and clear margin on CE-T1WI. Lesion in Case (C) grew in the lateral ventricle without apparent blood supply. Lesion in Case (D) located in the frontal, presenting with internal serpentine signal voids and clear dural tail sign. Actually, Cases (A,D) were pathologically confirmed meningiomas; Cases (B,C) were pathologically confirmed IHPCs.