Clinical characteristics and treatment outcome for nonvestibular schwannomas of the head and neck

Imaging Characteristics of Schwannoma of the Cervical Sympathetic Chain: A Review of 12 Cases

“…Most extracranial schwannomas are found in the parapharyngeal space and are usually of vagal origin. 1,2 Meanwhile, an SCSC is a rare entity. Most of the published material on SCSC are either case reports or small series, recorded primarily in the surgical literature, with limited emphasis on imaging.…”

Cervical sympathetic chain schwannoma presenting as a carotid body tumor

“…5 The incidence of neurological damage is usually around 60% with cranial nerves VII, IΧ, X, and XII. 6 With CSC schwannoma resection, the incidence of Horner's syndrome is high. 7 Depending on the extent of the mass, the carotid artery may have to be clamped for the procedure.…”

Extracranial head and neck schwannomas: A series of 14 patients

“…Therefore, treatment of schwannomas has been described as a cautious extracapsular dissection or even enucleation of the tumor from the nerve to preserve the function and integrity of the nerve for benign schwannomas. [15] The relative avascular nature of the tumor allows for dissection within the capsule and separation from the parent nerve, however, because the neural fascicles splay over the tumors, it is frequently impossible to preserve the associated nerve. [2] The total sacrifice rate of the associated nerve is 56% in the literature, whereas 64% of the rest had permanent and 29% had transient neural deficits.…”