Atypical meningiomas compared to other WHO Grade 2 meningiomas: Histological features and prognosis

From the Division of Neurosurgery (Ajlan, Basindwah, Alqurashi), Department of Surgery, College of Medicine, King Saud University, from the College of Medicine (Almeshari, Aljohani, Alharbi, Aldhowaihy), King Saud University, and from the Department of Pathology (Alkhaldi), College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia

From the Division of Neurosurgery (Ajlan, Basindwah, Alqurashi), Department of Surgery, College of Medicine, King Saud University, from the College of Medicine (Almeshari, Aljohani, Alharbi, Aldhowaihy), King Saud University, and from the Department of Pathology (Alkhaldi), College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia

From the Division of Neurosurgery (Ajlan, Basindwah, Alqurashi), Department of Surgery, College of Medicine, King Saud University, from the College of Medicine (Almeshari, Aljohani, Alharbi, Aldhowaihy), King Saud University, and from the Department of Pathology (Alkhaldi), College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia

From the Division of Neurosurgery (Ajlan, Basindwah, Alqurashi), Department of Surgery, College of Medicine, King Saud University, from the College of Medicine (Almeshari, Aljohani, Alharbi, Aldhowaihy), King Saud University, and from the Department of Pathology (Alkhaldi), College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia

From the Division of Neurosurgery (Ajlan, Basindwah, Alqurashi), Department of Surgery, College of Medicine, King Saud University, from the College of Medicine (Almeshari, Aljohani, Alharbi, Aldhowaihy), King Saud University, and from the Department of Pathology (Alkhaldi), College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia

From the Division of Neurosurgery (Ajlan, Basindwah, Alqurashi), Department of Surgery, College of Medicine, King Saud University, from the College of Medicine (Almeshari, Aljohani, Alharbi, Aldhowaihy), King Saud University, and from the Department of Pathology (Alkhaldi), College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia

From the Division of Neurosurgery (Ajlan, Basindwah, Alqurashi), Department of Surgery, College of Medicine, King Saud University, from the College of Medicine (Almeshari, Aljohani, Alharbi, Aldhowaihy), King Saud University, and from the Department of Pathology (Alkhaldi), College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia

From the Division of Neurosurgery (Ajlan, Basindwah, Alqurashi), Department of Surgery, College of Medicine, King Saud University, from the College of Medicine (Almeshari, Aljohani, Alharbi, Aldhowaihy), King Saud University, and from the Department of Pathology (Alkhaldi), College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia