Perineurioma

Perineurioma

This rare benign peripheral nerve tumor arises from perineurial cells, a type of cell that surrounds the peripheral nerve sheath. A perineurioma can form within a nerve, called an intraneural perineurioma. It may also form in soft next to a nerve, called an extraneural perineurioma. An intraneural perineurioma happens most often in children and young adults. It typically causes gradually progressive weakness and loss of feeling in an arm or leg.

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