How fast does a glioblastoma grow?

Glioblastoma is one of the most aggressive brain tumors, and it can grow rapidly, often doubling in size within a couple of weeks. The tumor's growth rate can vary among individuals, but it typically infiltrates surrounding brain tissue, making it difficult to completely remove surgically. Without treatment, glioblastoma can lead to significant neurological decline in a matter of months. Early diagnosis and intervention are crucial for improving outcomes.