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Schwannoma
Pronunciation
Definition 1
A tumor of the peripheral nervous system that arises in the nerve sheath (protective covering). It is almost always benign, but rare malignant schwannomas have been reported. (NCI Dictionary)
Definition 2
A benign, usually encapsulated slow growing tumor of the peripheral nervous system composed of well differentiated Schwann cells. It recurs infrequently and only rare cases associated with malignant transformation have been reported. (NCI Thesaurus)
Definition 3
A benign neoplasm of the peripheral nervous system composed of well-differentiated Schwann cells. (NCI Thesaurus/CDISC)
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