Causes of Brain Tumour

Reading time: 2 min

Currently, we are unaware of any direct causes that explain the appearance of brain tumours. Some tumours may be hereditary (neurofibromas) or induced by physical agents (radiotherapy). The vast majority of brain tumours are considered to have a multifactorial origin.

Symptoms of Brain Tumour

Increased intracranial pressure, headache and brain tumour growth

Increased intracranial pressure. As the tumour grows it occupies more space within the skull, thus increasing the intracranial pressure and causing symptoms such as headaches, sleepiness, nausea, vomiting and in very severe cases a loss of consciousness and a comatose state.

Man with inability or difficulty to speak

Direct local lesion. Depending on its location, the tumour may result in a loss of strength or sensitivity, language impairment, visual disturbances, memory problems, etc. These symptoms often tend to remain as sequelae of any surgical treatment.

Cerebrospinal fluid circulation obstruction

Cerebrospinal fluid circulation obstruction. A clear liquid, known as cerebrospinal fluid (CSF), is produced inside the brain. It circulates from the centre of the brain, through some canals, and towards the brain’s surface where it is reabsorbed. The brain generates approximately 500 mL of CSF every day; it also absorbs the same daily volume. A tumour can obstruct the normal circulation of CSF and stop it from reaching the reabsorption site. This situation is known as hydrocephalus and it produces certain symptoms due to the pressure increase.

Indirect local injury to the brain

Indirect local lesion. Brain tumours not only cause symptoms because of direct damage to the tissue, but also as a result of compression and inflammation in adjacent areas. These symptoms are usually less severe and respond better to tumour resection treatment.

What is Cancer?

General information about Cancer

Read more

Substantiated information by:

Josep Juan González Sanchez
Sergio García García
Verónica Mato Pin

Published: 20 February 2018
Updated: 20 February 2018

The donations that can be done through this webpage are exclusively for the benefit of Hospital Clínic of Barcelona through Fundació Clínic per a la Recerca Biomèdica and not for BBVA Foundation, entity that collaborates with the project of PortalClínic.


Receive the latest updates related to this content.

Thank you for subscribing!

If this is the first time you subscribe you will receive a confirmation email, check your inbox

An error occurred and we were unable to send your data, please try again later.