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Types of brain tumoursTTypes of brain tumoursTypes of brain tumoursEnglishNeurology;OncologyChild (0-12 years);Teen (13-18 years)Brain;SpineNervous systemConditions and diseasesAdult (19+)NA2009-07-10T04:00:00ZEric Bouffet, MD, FRCPC8.0000000000000062.0000000000000455.000000000000Flat ContentHealth A-Z<p>A step-by-step introduction to the different types of childhood brain tumors. Answers from Canadian Paediatric Hospitals.</p><p>There are more than 100 different types of brain tumors. Tumours are usually named after the type of cell they develop from. One example is a glioma, which grows out of glial cells. Tumours may also be described based on their location, such as a brainstem glioma. </p> <p>Sometimes the same tumour may have different names, which can be confusing. The name of a tumour can change as researchers learn more details about tumour cells. </p> <p>You may also hear tumours being described in two other general ways.</p><h2>Key points</h2> <ul><li>There are more than 100 different types of brain tumours.</li> <li>Brain tumours can be categorized in several ways including: primary or secondary; and benign or malignant.</li> <li>Grading is a system that indicates how aggressively tumour cells are growing.</li> <li>Staging determines the type of treatment that is most effective.</li></ul>
Types de tumeurs cérébralesTTypes de tumeurs cérébralesTypes of brain tumoursFrenchNeurology;OncologyChild (0-12 years);Teen (13-18 years)Brain;SpineNervous systemConditions and diseasesAdult (19+)NA2009-07-10T04:00:00ZEric Bouffet, MD, FRCPC8.0000000000000062.0000000000000455.000000000000Flat ContentHealth A-Z<p>Une introduction par étapes aux divers types de tumeurs cérébrales chez les enfants. Réponses des hôpitaux pédiatriques canadiens.</p><p>Il existe plus de 100 types différents de tumeurs cérébrales. On nomme habituellement les tumeurs selon le type de cellule où elles se développent. Par exemple, le gliome se développe dans les cellules gliales. On peut aussi décrire les tumeurs selon leur emplacement, comme le gliome du tronc cérébral. </p> <p>Parfois, la même tumeur a des noms différents, ce qui peut porter à confusion. Le nom d'une tumeur peut changer à mesure que les chercheurs apprennent de nouveaux détails sur les cellules tumorales. </p> <p>Vous pourriez aussi entendre parler de tumeurs décrites de deux autres façons générales.</p><h2>À retenir</h2> <ul><li>Il existe plus de 100 différents types de tumeurs cérébrales.</li> <li>Les tumeurs cérébrales peuvent être catégorisées de différentes façons, dont primaire ou secondaire, bénigne ou maligne.</li> <li>La gradation est un système permettant d'indiquer l'agressivité avec laquelle les cellules tumorales croissent.</li> <li>La stadification permet de déterminer le type de traitement le plus efficace.</li></ul>

 

 

Types of brain tumours1308.00000000000Types of brain tumoursTypes of brain tumoursTEnglishNeurology;OncologyChild (0-12 years);Teen (13-18 years)Brain;SpineNervous systemConditions and diseasesAdult (19+)NA2009-07-10T04:00:00ZEric Bouffet, MD, FRCPC8.0000000000000062.0000000000000455.000000000000Flat ContentHealth A-Z<p>A step-by-step introduction to the different types of childhood brain tumors. Answers from Canadian Paediatric Hospitals.</p><p>There are more than 100 different types of brain tumors. Tumours are usually named after the type of cell they develop from. One example is a glioma, which grows out of glial cells. Tumours may also be described based on their location, such as a brainstem glioma. </p> <p>Sometimes the same tumour may have different names, which can be confusing. The name of a tumour can change as researchers learn more details about tumour cells. </p> <p>You may also hear tumours being described in two other general ways.</p><h2>Key points</h2> <ul><li>There are more than 100 different types of brain tumours.</li> <li>Brain tumours can be categorized in several ways including: primary or secondary; and benign or malignant.</li> <li>Grading is a system that indicates how aggressively tumour cells are growing.</li> <li>Staging determines the type of treatment that is most effective.</li></ul><h3>1. Where they begin to grow: primary and secondary tumours</h3><p>A primary brain tumour develops directly in the brain. Most brain tumours in children are primary brain tumours. </p><p>A secondary tumour is rare in children. It develops first somewhere else in the body, such as in the bones or skin. When these abnormal bone or skin cells spread to the brain, they are called a <q>secondary</q> tumour. </p><h3>2. How fast they are growing: benign and malignant brain tumours. This may also be described as the grade of a tumour.</h3><p>A benign brain tumour is not cancerous. The cells in the tumour are growing slowly. Many benign brain tumours can be removed by surgery and they do not grow back. However, some benign brain tumours can be dangerous. This is because they are located in a part of the brain that is difficult to reach by surgery or in an important part of the brain that could be harmed by surgery. </p><p>A malignant brain tumour is considered a cancer. This means the abnormal cells in the tumour are making copies of themselves quickly. As a result, the tumour grows quickly, and tumour cells can spread to other parts of the brain or spine. This is called metastasis. However, in many cases, cancerous tumours can be treated with good success. They rarely spread outside the central nervous system (CNS). </p><h2>What is grading?</h2><p>Grading is a system that indicates how aggressively tumour cells are growing. Grade 1 tumours are considered benign and they do not grow fast. Grade 4 tumours are malignant, or cancerous, and they grow very quickly. The grade of a tumour is used to plan treatment and predict the course of the disease. </p><p>A doctor called a pathologist studies the tumour cells under a microscope to give the tumour a grade.</p><h2>What is staging?</h2><p>Staging determines the type of treatment that is most effective. This depends on a number of factors such as the child’s age, the type and size of the tumour, and whether it has spread to other parts of the body. </p><p>To stage the tumour, the following diagnostic tools are used: computerized tomography (CT) scans, magnetic resonance imaging (MRI), lumbar puncture, and sometimes bone marrow studies. </p><h2>Types of brain tumours</h2><table class="akh-table"><thead><tr><th> Tumour cell type </th><th> Comments </th></tr></thead><tbody><tr><td> <strong>Gliomas:</strong></td><td>May be located anywhere within the major areas of the brain (cerebral hemispheres, cerebellum, brainstem) or spinal cord</td></tr><tr><td>Pilocytic astrocytoma</td><td>Low grade glioma, benign, World Health Organization (WHO) grade I; includes optic nerve and hypothalamic gliomas, which are located in the optic chiasm (which is part of the optic nerve system in the brain) or a part of the brain called the sellar region</td></tr><tr><td>Fibrillary astrocytoma</td><td>Low grade glioma, benign, WHO grade II</td></tr><tr><td>Pilomyxoid astrocytoma</td><td>Low grade glioma, benign, WHO grade I (mostly seen in infants; often more aggressive behaviour than pilocytic astrocytoma)</td></tr><tr><td>Anaplastic astrocytoma</td><td>High grade glioma, malignant, WHO grade III</td></tr><tr><td>Glioblastoma multiforme</td><td>High grade glioma, malignant, WHO grade IV</td></tr><tr><td>Diffuse pontine glioma</td><td>Malignant glioma located in the brainstem</td></tr><tr><td> <strong>Medulloblastoma</strong></td><td>A type of primitive neuroectodermal tumour (PNET) located in the cerebellum and fourth ventricle (a fluid-filled space in the brain). There are three types of medulloblastoma: classic, desmoplastic, and large cell/anaplastic</td></tr><tr><td> <strong>Ependymoma:</strong></td><td>Usually located in lining of the ventricles</td></tr><tr><td>Myxopapillary ependymoma</td><td>WHO grade I</td></tr><tr><td>Benign ependymoma</td><td>WHO grade II</td></tr><tr><td>Anaplastic ependymoma</td><td>WHO grade III</td></tr><tr><td> <strong>Germ cell tumours:</strong></td><td></td></tr><tr><td>Germinoma</td><td>Most common type</td></tr><tr><td>Non-germinomatous germ cell tumours</td><td>Also known as secreting germ cell tumours</td></tr><tr><td>Teratoma</td><td>Non-germinoma, non-secreting tumours; may be benign or malignant</td></tr><tr><td> <strong>Craniopharyngioma</strong></td><td>Slow-growing, benign tumour located in the sellar region above the pituitary gland<br></td></tr><tr><td> <strong>Other central nervous system tumours: </strong></td><td></td></tr><tr><td>Dysembryoplastic neuro-epithelial tumour</td><td>Benign tumour located within the brain, often causes seizures</td></tr><tr><td>Choroid plexus tumours</td><td><p>Located in a part of the brain called the choroid plexus, most often in the lateral ventricles </p><p>Associated with overproduction of cerebrospinal fluid (CSF) </p></td></tr><tr><td>Meningioma</td><td>Rare benign tumour located in external lining of brain or spinal cord</td></tr><tr><td>Pituitary adenoma</td><td>Rare benign tumour of the pituitary gland</td></tr><tr><td>Rhabdoid tumour</td><td>Rare, fast-growing malignant tumour found mostly in infants</td></tr><tr><td>Schwannoma</td><td>Benign, slow-growing tumour of the peripheral nerves</td></tr></tbody></table>Types of brain tumours

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