Jargon buster

A comprehensive list of the terms and words you will come across in relation to brain tumours.


Temporal lobe

The part of each cerebral hemisphere of the brain located at the middle, lower half of the brain. It is involved in many 'higher' functions, such as intellect and behaviour. It also plays a large role in hearing and processing the meaning of speech.


A supportive membrane that sits above the cerebellum and below the cerebral cortex

Terminal illness

A disease that cannot be cured and that is reasonably expected to result in death within a short period of time.


A condition where there are not enough platelets in the blood. This causes bleeding into the tissues, bruising and slow blood clotting after injury.


The formation of a blood clot. The clot itself is called a thrombus.

Tissue bank

A facility (usually within a hospital where samples of human body tissue or fluid are stored

Tissue banking

The process of collecting and storing body fluids or tissue, e.g. a sample of your tumour. This can then be used in research to help with the understanding of the disease.


How harmful or poisonous a substance is.


Receiving someone else's blood through the veins in order to replace blood, or components of the blood, lost during illness or trauma.

Treatment mask

A mask that is made specifically to fit your head, that is attached to the treatment table and holds your head in position during radiotherapy treatment. This is important, as you need to stay very still during the treatment, so that the radiotherapy is directed to the correct part of the brain i.e. the tumour. The mask may be made of plastic or Plaster of Paris, and is moulded to the shape of your head.

Treatment plan

The plan and schedule of treatment(s) based on what is considered to be the best treatment option(s) for you. This will depend on many factors, including your tumour type, location and your wishes. Your treatment plan should be a joint decision between you and your health team (MDT).

Tumour progression

When a tumour starts to grow more quickly, or starts to spread and invade other cells.

Type-2 diabetes

A condition whereby a person does not produce enough insulin or their cells are resistant to it. Insulin is a hormone that regulates how much sugar from the blood can be used by the cells. This condition is occurs more often in people over 40. People with diabetes are more likely to develop heart disease or have a stroke.