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Pediatric Schwannomatosis

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Schwannomatosis is a very rare form of neurofibromatosis that has only recently been recognized and appears to affect about 1 in 40,000 individuals. It is less well understood than NF1 and NF2, and features may vary greatly between patients.

The distinguishing feature of schwannomatosis is the development of multiple schwannomas, tumors of the peripheral nervous system that arise in the nerve sheath and that are composed of Schwann cells.

Diagnosis and treatment of schwannomatosis in children

Schwannomatosis can appear almost everywhere in the body. The dominant symptom is pain, which can be excruciatingly intense. Pain develops when a schwannoma enlarges, compresses nervesor presses on adjacent tissue. Some people experience additional neurological symptoms, such as numbness, tingling or weakness in the fingers and toes. Patients with schwannomatosis never have neurofibromas.

About one-third of patients with schwannomatosis have tumors only on a single part of the body, such as an arm, a leg or a segment of the spine. The number of schwannomas on a patient can vary widely.

There is no currently accepted medical treatment or drug for schwannomatosis, but surgical management is often effective. When tumors are completely removed pain usually subsides, although it may recur if new tumors form. When surgery is not possible, ongoing monitoring and management of pain in a multidisciplinary pain clinic is advisable.

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Neurofibromatosis Institute

Learn more about our world-renowned Gilbert Family Neurofibromatosis Institute, which helps children with neurofibromatosis type 1 or 2 live more normal lives.

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Maddox's Story

Maddox's family

Zhen Chao, now called Maddox, was born in China with a genetic condition called neurofibromatosis type 1 (NF1) that can cause painful or disfiguring tumors called plexiform neurofibromas. Read about Maddox.

Read More of Maddox's Story

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