Accessory nerve schwannoma classification [Neurosurgery Wiki]

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====== Accessory nerve schwannoma classification ======

The spinal [[accessory nerve]] has a cisternal, a foraminal (jugular) and an extracranial course. The tumors can be anywhere along this course. 

Spinal accessory nerve schwannomas are classified accordingly by their origin as cisternal, foraminal or extracranial/cervical
((Agrawal A, Rao KS, Makannavar JH, Shetty L, Raveendra VM. Intrasternomastoid spinal accessory nerve schwannoma: Clinical and radiological correlation. Neurol India. 2005;53:347–8.))
((Hatashita S, Mitsuhashi T, Kurosu A, Ueno H. Schwannoma of the spinal accessory nerve: Case report. Neurol Med Chir (Tokyo) 2003;43:501–4.)).

The intracranial [[accessory nerve]] [[schwannoma]]s could be either of the [[jugular foramen]] type, the intracisternal type, or of the cervical type. The lower cranial nerves which include the [[glossopharyngeal nerve]], the [[vagus]] and the [[accessory nerve]], form a complex at the jugular foramen, which is defined as a [[jugular foramen schwannoma]] without the identification of the individual cranial nerve
((Julow J. Neurinoma of spinal accessory nerve. Report of two cases. Acta
Neurochir (Wien). 1983;69(3-4):219-24. PubMed PMID: 6650236.
)).

see [[Intracisternal accessory nerve schwannoma]].

see [[Jugular foramen schwannoma classification]].