Success rates for brain tumour surgery — an honest look

There is no single "success rate" for brain tumour surgery, because the numbers depend entirely on what kind of tumour it is. Removing a small benign meningioma has very different odds to removing a deep glioblastoma.

For benign tumours in surgically accessible locations — most meningiomas, schwannomas, colloid cysts, many pituitary tumours — complete removal is often possible with very low risk of new neurological problems, and long-term outcomes are excellent.

For malignant primary brain tumours — high-grade gliomas — surgery is only one part of the treatment. The goal is maximal safe removal, followed by radiation and chemotherapy. Survival has improved significantly in the last decade but remains a serious diagnosis.

For metastatic tumours (spread from cancer elsewhere), surgery is often combined with radiation. Outcomes depend heavily on the primary cancer and how it is responding to systemic treatment.

The most useful number is not a general statistic but the one specific to your tumour, in your location, at your age and health. I will give you those numbers honestly before you consent, so your decision is based on your reality, not a headline figure.