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  • Title: [Neurinoma of the vagus nerve. Description of 2 cases and review of the literature].
    Author: Wiel Marin A, Zucchetti F, Butti A, Destito C, Mercuri M, Bolognini S, Romagnoli A.
    Journal: G Chir; 1998; 19(1-2):31-4. PubMed ID: 9567493.
    Abstract:
    The Authors report two rare cases of schwannoma of the cervical and thoracic portion of the vagus nerve. Schwannomas of the vagus nerve are particularly uncommon; patients suffering from these neurogenic tumors typically exhibit a paucity of symptoms and in the majority of cases they present with an asymptomatic mass noted on incidental chest X-ray. Chest pain and cough may occur with tumors arising next to and compressing the trachea or major bronchi. In the cases observed, schwannomas appeared like a mass whose size had increased during the last months without producing any clinical symptom. Clinical features of the mass, laboratory tests, ultrasound, CT scanning, magnetic resonance imaging were useful only to define its extension and relationships with the adjacent structures. Needle aspiration of these lesions is not indicated because of the paucity of the material obtained for the exact diagnosis. Surgery, with preservation of the vagus nerve when possible, is the treatment of choice also for a correct diagnosis of nature and to prevent further growth and compression on adjacent structures. When the individual fibers of the vagus nerve are displayed over the surface of the tumor within a discrete capsule nerve preservation is possible. On the contrary, when it is technically difficult to preserve the nerve trunk microsurgical procedures allow to reanastomose the cut ends. Injury of homolateral recurrent nerve often is the complication of a radical removal. Recurrence of benign lesions is not usual; malignant tumors carry a poor prognosis with patients rarely surviving beyond 1 year.
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