Haemangioblastomas develop in the cells that line the blood (haem) vessels in the brain or in the spinal cord. They usually start in the cerebellum and less commonly the brain stem or spinal cord.
A haemangioblastoma is a slow-growing tumour. They are sometimes called benign tumours (not cancerous). Your doctor may be more likely to talk to you about the “grade” of the tumour. The grade gives an indication to how slowly or quickly the tumour may grow.
A slow growing (low grade) tumour can still cause problems as it grows by pressing on surrounding tissue. But it is less likely than a faster growing tumour (high grade) to grow into other parts of the brain.
It’s best to read this information along with our general information about brain tumours which has more detailed information about tests and treatments. We also have more information about spinal cord tumours.