Imprimir Descripción generalA neurofibroma is a type of peripheral nerve tumor that forms a soft bump on or under the skin. The tumor can develop within a major or minor nerve anywhere in the body. This common type of nerve tumor tends to form centrally within the nerve. A neurofibroma forms on the protective covering of the nerve, known as the nerve sheath. Sometimes it grows on several nerve bundles. When this happens, it's called a plexiform neurofibroma. A neurofibroma may cause mild symptoms or no symptoms at all. If the tumor presses against nerves or grows within them, it may cause pain or numbness. A neurofibroma usually isn't cancer. Rarely, it can become cancer.Productos y serviciosBoletín informativo: Mayo Clinic Health Letter — Edición digitalMayo Clinic Family Health Book (Libro de Mayo Clinic sobre la salud familiar), 5.ª ediciónMostrar más productos de Mayo Clinic Tipos Neurilemoma Neurinoma del acústico Neurofibroma Tumor benigno de los nervios periféricos Tumores desmoides Tumores malignos de la vaina de los nervios periféricos SíntomasA neurofibroma might cause no symptoms. If symptoms occur, they're usually mild. When a neurofibroma grows on or under the skin, symptoms may include: A bump on the skin. The bump may be the color of your skin or pink or tan. Pain. Bleeding. If a neurofibroma becomes large or presses against or grows on a nerve, symptoms may include: Pain. Tingling. Numbness or weakness. Change in appearance when a large neurofibroma is on the face. Some people with neurofibromas have a genetic condition known as neurofibromatosis type 1 (NF1). A person with NF1 may have many neurofibromas. The number of neurofibromas increases with age. A tumor that involves many nerves, known as a plexiform neurofibroma, can occur in a person with NF1. This type of neurofibroma can grow large and cause pain. It also can become cancerous. Solicite una consulta CausasA neurofibroma can arise with no known cause, or it may appear in people with a genetic condition called neurofibromatosis type 1. Neurofibromas most often are found in people ages 20 to 30 years old. Factores de riesgoThe only known risk factor for neurofibromas is having the genetic condition known as neurofibromatosis type 1 (NF1). People with NF1 have several neurofibromas, along with other symptoms. In about half of the people with NF1, the disease was passed down from a parent. However, most people with neurofibromas don't have NF1. Escrito por el personal de Mayo Clinic Solicite una consulta Nov. 07, 2024 Imprimir Mostrar referencias Neurofibroma. American Brain Tumor Association. https://www.abta.org/tumor_types/neurofibroma. Accessed Sept. 23, 2022. Tamura R. Current understanding of neurofibromatosis type 1, 2 and schwannomatosis. International Journal of Molecular Sciences. 2021; doi:10.3390/ijms22115850. Neurofibromatosis. Merck Manual Professional Version. https://www.merckmanuals.com/professional/SearchResults?query=neurofibromatosis. Accessed Sept. 23, 2022. Winn HR, ed. Benign and malignant tumors of the peripheral nerve. In: Youmans and Winn Neurological Surgery. 8th ed. Elsevier; 2023. https://www.clinicalkey.com. Accessed Sept. 23, 2022. Jankovic J, et al., eds. Primary nervous system tumors in adults. In: Bradley and Daroff's Neurology in Clinical Practice. 8th ed. Elsevier; 2022. https://www.clinicalkey.com. Accessed Sept. 23, 2022. Sener UT (expert opinion). Mayo Clinic. Oct. 10, 2022. 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