How Fast Do Brain Tumors Grow?

Many brain tumors grow slowly, particularly benign brain tumors. Some benign tumors may be safely monitored by a medical team for months or even years rather than being immediately removed with surgery. Many malignant tumors, though, are more aggressive and fast-growing and likely need prompt treatment.

How long do brain tumors take to develop?

Radiation-induced brain tumors can take anywhere from 10-30 years to form. With the recent popularity of cellular phones, many people have worried that their use may be a risk factor for developing brain tumors. However, there has been no conclusive evidence that cell phones increase the risk of brain tumors.

What is considered fast growing brain tumor?

Glioblastomas (grade IV), which are the fastest growing. These tumors make up more than half of all gliomas and are the most common malignant brain tumors in adults.