A to Z: Primitive Neuroectodermal Tumor (PNET)enparentshttps://kidshealth.org/EN/images/headers/P-khAZDictionary-enHD-AR1.jpgPrimitive neuroectodermal tumors, or PNETs, are tumors that can happen anywhere in the brain or spine.Primitive neuroectodermal tumor, PNET, medulloblastoma, posterior fossa PNET, supratentorial PNET, pineoblastoma, tumor, cancer, malignant, metastasize, cerebrospinal fluid, brain, central nervous system, brain tumor, brain cancer, brain cells, primitive cells, undifferentiated cells, spinal cord, nervous system cancers, brain surgery, chemotherapy, radiation treatment01/09/201501/03/202001/03/2020dc56343d-8c40-4ae8-8f33-2fa483625dc3https://kidshealth.org/ws/RadyChildrens/en/parents/az-pnet.html/<p><strong>May also be called: Medulloblastoma; Posterior Fossa PNET; Supratentorial PNET; Pineoblastoma</strong></p> <p>Primitive neuroectodermal (PRIM-ih-tiv nur-oh-ek-tuh-DERM-ul) tumors, or PNETs, are <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/brn-tumors.html/">tumors</a> that can happen anywhere in the <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/brain-nervous-system.html/">brain</a>. These tumors can spread to the fluid that surrounds the brain and spinal cord.</p> <h3>More to Know</h3> <p>Primitive neuroectodermal tumors develop from immature nerve cells in the brain. These primitive cells are often <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/cancer.html/">cancerous</a>, and can start to grow out of control.</p> <p>Types of PNETs include:</p> <ul> <li><a href="https://kidshealth.org/ws/RadyChildrens/en/parents/medulloblastoma.html/">medulloblastoma</a></li> <li>posterior fossa PNET</li> <li>supratentorial PNET</li> <li>pineoblastoma</li> </ul> <p>Symptoms of a PNET often depend on the size of the tumor and where it is, but common symptoms include:</p> <ul> <li><a href="https://kidshealth.org/ws/RadyChildrens/en/parents/headache.html/">headaches</a>, nausea, and vomiting (especially in the morning) caused by increased pressure in the head</li> <li>weakness in the arms and legs</li> <li>vision problems</li> <li><a href="https://kidshealth.org/ws/RadyChildrens/en/parents/seizure.html/">seizures</a></li> <li>trouble with balance and coordination</li> </ul> <p>PNETs require aggressive treatment, including surgery, <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/chemotherapy.html/">chemotherapy</a>, and <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/radiation.html/">radiation therapy</a>.</p> <h3>Keep in Mind</h3> <p>PNETs are serious tumors that need a lot of treatment. But recent medical advances have made a cure possible for many of the children who have them.</p> <p><em>All A to Z dictionary entries are regularly reviewed by KidsHealth medical experts.</em></p>
Brain TumorsBrain tumors are the second most common group of childhood cancers. Treatment requires a very specialized plan involving a team of medical specialists.https://kidshealth.org/ws/RadyChildrens/en/parents/brn-tumors.html/ff2bd11c-a3d8-4bb3-bb58-edd97dd13a31
Brain and Nervous SystemThe brain controls everything we do, and is often likened to the central computer within a vast, complicated communication network, working at lightning speed.https://kidshealth.org/ws/RadyChildrens/en/parents/brain-nervous-system.html/1e2a5004-5865-4069-97fd-5488c31075b9
Brain and Nervous System CancersThese cancers are the most common type of cancer in children. When discovered early, they often can be cured.https://kidshealth.org/ws/RadyChildrens/en/parents/brain-tumors.html/527c1203-9898-45b5-8dba-3de70f76df5d
Cancer CenterFrom treatments and prevention to coping with the emotional aspects of cancer, the Cancer Center provides comprehensive information that parents need.https://kidshealth.org/ws/RadyChildrens/en/parents/center/cancer-center.html/92fcdf56-6935-42ac-a953-9eaf5f96fe2f
ChemotherapyChemotherapy (chemo) is treatment with medicines that stop the growth of cancer cells.https://kidshealth.org/ws/RadyChildrens/en/parents/chemotherapy.html/54f93018-4955-4463-b067-5621e285210f
Childhood CancerDifferent kinds of childhood cancer have different signs, symptoms, treatments, and outcomes. But today, most kids with cancer get better.https://kidshealth.org/ws/RadyChildrens/en/parents/cancer.html/fb37fd75-d961-43c2-b963-ef6f60486038
Radiation TherapyRadiation therapy, also called radiotherapy, irradiation, or X-ray therapy, is one of the most common forms of cancer treatment.https://kidshealth.org/ws/RadyChildrens/en/parents/radiation.html/b9df7e63-811c-454a-b467-44a28efb1250
Words to Know (Cancer Glossary)Check out our cancer glossary for lots of easy-to-read definitions.https://kidshealth.org/ws/RadyChildrens/en/parents/cancer-glossary.html/b23569e7-7ecf-4e78-8aad-108e0ab04842
kh:age-allAgesOrAgeAgnostickh:clinicalDesignation-neurologykh:genre-dictionarykh:primaryClinicalDesignation-oncologyOncology (Cancer) A to Zhttps://kidshealth.org/ws/RadyChildrens/en/parents/dictionary/az-onco/a7735711-c7f1-46e3-a571-50ca4db487ccPhttps://kidshealth.org/ws/RadyChildrens/en/parents/dictionary/p/e492181e-6c97-4cd3-8738-cebc1f62bc38