Neurilemmoma of the larynx

Schwannoma of the Cervical Vagus with Intrathoracic Extension

Schwannomas are the rare benign tumors of the neck. Patients developing from the brachial plexus and cervical truncus and extending to the posterior mediastinum have been reported, but for the first time the following case report describes the extension of a vagal origin schwannoma from the anterior and middle mediastinum and its extraction with thoracotomy without sternotomy.

Emergency embolization after resection of a laryngeal Schwannoma

Schwannoma is a rare cause of benign tumors of the larynx. The first-choice treatment is surgical resection. The objective of this paper is to report on a rare case of a young female patient who suffered severe intraoperative hemorrhaging during surgical resection of a laryngeal Schwannoma and needed emergency embolization.

Schwannoma of the Larynx: A Case Report

Neurogenic tumors of the larynx are rare. We report a case of supraglottic schwannoma in a 59-year-old woman. We excised the tumor via a lateral thyrotomy approach.

Asphyxial death caused by a laryngeal schwannoma: a case report

Neurogenic tumours of the larynx are unusual, with approximately 115 cases reported in the literature to date. Most of these lesions are benign, solitary submucosal nodules which present with hoarseness and are amenable to surgical resection. We present a case of a large pedunculated schwannoma arising in the aryepiglottic fold associated with sudden asphyxial death in an otherwise healthy young female.

Subglottic nerve sheath tumor in a pediatric patient: case report and literature review

BACKGROUND

Although nerve sheath tumors (neurilemmoma and neurofibroma) can occur on any nerve with Schwann cells, laryngeal involvement is very uncommon. The vast majority of reported laryngeal nerve sheath tumors have been located in the supraglottic area. Our case report involves the diagnosis and management of a subglottic nerve sheath tumor in a pediatric patient. Only two previous reports of such a lesion appear in the world literature.

METHODS

A 12-year-old girl was initially seen by her allergist for evaluation of a 2-month history of wheezing and nocturnal dyspnea. Therapy with bronchodilators and steroids had limited success. Flow-volume loop studies suggested a fixed upper airway obstruction, and an office laryngoscopy identified a cherry red, submucosal subglottic lesion. Magnetic resonance imaging (MRI) scan verified the presence of a smooth, homogeneous subglottic mass.

RESULTS

An endoscopic CO2 laser excision of the lesion was performed using jet ventilation technique. Histopathology determined the lesion to be a nerve sheath tumor (neurilemmoma versus neurofibroma). Postoperatively, the patient has been asymptomatic without evidence of recurrence.

CONCLUSIONS

A subglottic nerve sheath tumor in a pediatric patient is very rare. Although endoscopic and open approaches have been advocated, CO2 laser with jet ventilation provided an excellent modality for resecting this lesion.

Spontaneous expulsion of schwannoma of epiglottis

A rare case of spontaneous expulsion of schwannoma of epiglottis is being reported. These are neurogenic tumours arising from the schwan sheath of peripheral, cranial and sympathetic nerves. The great majority of these neurogenic tumours originate from aryepiglottic fold or false vocal cords. However the neurofibroma of the epiglottis are quite uncommon.

Schwannomas of the larynx: review and computed tomographic scan analysis

Neurogenic tumors consist of schwannomas, neurofibromas, and neurosarcomas that arise from the Schwann cell of a peripheral nerve. Their occurrence in the larynx is rare, with only 115 cases having been reported. Three new cases are presented, the literature is reviewed, and the first computed tomographic (CT) scan of a benign schwannoma of the larynx is demonstrated. The diagnosis and treatment of these tumors and the CT scan analysis are discussed.

Endolaryngeal neurofibromas

A neurofibroma in the larynx is quite unusual and is more likely to appear as a solitary, isolated lesion rather than a concomitant finding in von Recklinghausen's disease. A case is presented of a patient with residual endolaryngeal neurofibroma despite eight attempts at removal. The importance of complete extirpation during the initial operative procedure using frozen sections to guarantee clear surgical margins is advocated.

Calcified neurilemoma of the larynx

A calcified neurilemoma was discovered in a 73-year-old man whose main complaint was of progressive hoarseness associated with recent dysphagia. The tumor was located above the level of the right vocal cord, measured 4×3×3 cm and showed extensive cystic degeneration, in addition to calcification. At microscopic examination both Antoni A and B patterns were identified at the periphery of the degenerate tumor. At the ultrastructure level the tumor was composed of collagen fibrils with scattered elongated cells. Cells had a definite basement membrane and cytoplasmic substructures as described in neurilemoma. These benign encapsulated neoplasms are very rare in the larynx and the initial symptom usually is longstanding progressive hoarseness as in this report. Local excision is satisfactory treatment for laryngeal neurilemomas when practical.