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*Intramuscular schwannoma
*Intramuscular schwannoma
:*Painless [[mass]]
:*Painless [[mass]]
==References==
==References==
{{Reflist|2}}
{{Reflist|2}}

Revision as of 17:44, 25 October 2019

Schwannoma Microchapters

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Epidemiology and Demographics

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Natural History, Complications and Prognosis

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Maneesha Nandimandalam, M.B.B.S.[2]

Natural history

More than half of all VS grow at an average of 2–4 mm/year, whereas less than 10% regress27. One study revealed that extrameatal tumors (28.9%) were more likely to grow compared to intrameatal tumors (17%) and a larger percentage of tumors grew early on after detection28. VS >2 cm are more likely to grow compared to smaller VS29–30. Growth rates of >2 mm/year are associated with decreased rates of hearing preservation compared to slower growth rates31

Clinical presentation

Presentation depends on the location of the tumor (see below) but generally, symptoms are due to local mass effect or dysfunction of the nerve they arise from.

Symptoms of schwannoma depend on the location of the tumor.

  • Intracranial schwannoma:
  • Trigeminal schwannoma
  • Facial nerve schwannoma
  • Jugular foramen schwannoma
  • Hypoglossal schwannomas
  • Spinal schwannoma
  • Intercostal nerve schwannoma
  • Usually asymptomatic
  • Intramuscular schwannoma

References


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