Benign

This term is sometimes used for low grade, slower growing tumours, which rarely spread. The term ‘benign’ is less used nowadays as it can be misleading. ‘Benign’ tumours can still be serious, causing damage to the brain by pressing on the brain itself or by blocking the flow of the cerebro-spinal fluid. This can lead to a build-up of pressure on the brain. Please see the Grading of tumours page