Question: what does atypical meningioma mean?
Answer: Grade II (atypical): Approximately 15 percent to-20 percent of meningiomas are atypical, which means that the tumor cells do not appear typical or normal. Atypical meningiomas are neither malignant (cancerous) nor benign, but may become malignant at some point. Grade II meningiomas also tend to recur and grow faster.