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Definition of Schwannoma

  • Medical Author:
    Melissa Conrad Stöppler, MD

    Melissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.

Schwannoma: a tumor of the tissue that surrounds nerves of the peripheral nervous system, medically known as the nerve sheath. The name schwannoma comes from the cell of origin (Schwann cell) that makes up the tissue around the nerves. Schwannomas are usually benign (not cancerous), but rarely may be malignant.

An acoustic neuroma (vestibular schwannoma) is a common type of schwannoma that develops on the nerve that connects the ear to the brain. A schwannoma may not cause any symptoms. In other cases, the symptoms depend on the location and size of the growth. The symptoms can include a lump or bump that can be felt, pain, tingling, numbness, hearing problems, or facial paralysis. The cause of schwannomas is poorly understood. Some people with genetic disorders such as neurofibromatosis 2 (NF2), schwannomatosis, or Carney complex may develop multiple schwannomas.


The abbreviated term ADHD denotes the condition commonly known as: See Answer
Reviewed on 9/7/2018

REFERENCE: Genetic and Rare Disease Information Center. Schwannoma. Updated: Dec 06, 2017.

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