Figure 1

Primary MIVM and first local recurrence. (A) CT scan, showing a huge hyperdense mass lesion in the trigone with central necrosis. (B) MRI scan, demonstrating heterogeneous enhancement of the lesion. (C) Histopathological findings revealing anaplastic meningioma with cellular pleomorphism, nuclear atypia, and geographic necrosis (H & E 400×). (D) Postoperative MRI scan, displaying no residual tumor. (E) MRI scan, disclosing local recurrence. (F) MRI scan, showing a huge residual cavity after the second craniotomy.