Schwannoma

Paranasal sinus melanoma masquerading as chronic sinusitis and nasal polyposis

August 31, 2007     Brian Kung, MD; Geoffrey R. Deschenes, BA; William Keane, MD; Mary Cunnane, MD; Marie-Paule Jacob-Ampuero, MD; Marc Rosen, MD
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Abstract
Malignant melanoma of the nose and paranasal sinuses can be a devastating disease, typically presenting at an advanced stage, with a 5-year survival rate ranging between 20 and 30%. It is an uncommon process, often misdiagnosed both clinically and pathologically. We present the case of an 80-year-old man who had a 2-month history of progressively worsening left-sided epistaxis and nasal obstruction. Radiographic evidence indicated the presence of soft tissue in the left maxillary sinus and nasal cavity resembling massive nasal polyposis and chronic fungal sinusitis. Magnetic resonance imaging was not performed because the patient had a pacemaker. After endoscopic debridement of the soft-tissue mass, frozen-section analysis detected no evidence of tumor. The final pathologic diagnosis was malignant melanoma. Otolaryngologists should be familiar with the difficulties inherent in the diagnosis and management of sinonasal melanomas.

Schwannoma of the tonsil

May 31, 2007     Byung-Joo Lee, MD, PhD; Soo-Geun Wang, MD, PhD; Jin-Choon Lee, MD, PhD; Il-Woo Lee, MD, PhD
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Abstract

Between 25 and 48% of schwannomas have been reported to occur in the head and neck region; the acoustic nerve is involved in most cases. Schwannomas arising in the tonsil are extremely uncommon. We report a case of tonsillar schwannoma in a 23-year-old woman. We also review the literature on this rare entity.

Schwannoma of the nasal cavity

March 31, 2007     Amee Dharia, MD; Collin S. Karmody, MD; Elie E. Rebeiz, MD, FACS
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Facial nerve schwannoma presenting as a tympanic mass

May 31, 2006     Sejal P. Sarolia, BS; Christopher J. Danner, MD; Eren Erdem, MD
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Inferior turbinate schwannoma: Report of a case

May 31, 2006     Riad Khnifies, MD; Milo Fradis, MD; Alexander Brodsky, MD; Jacob Bajar, MD; Michal Luntz, MD
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Abstract
Schwannomas of the nasal cavity are extremely rare. We evaluated a 42-year-old woman who presented with a 4-year history of slowly progressive nasal obstruction. The cause of the obstruction was identified as a schwannoma in the left inferior turbinate. The tumor was completely excised, and no sign of recurrence was evident at the 1-year follow-up. To the best of our knowledge, this is only the third case of a schwannoma originating in the inferior nasal turbinate that has been reported in the English-language literature. We review the clinical and pathologic features of this case.

Schwannoma of the true vocal fold: A rare diagnosis

January 1, 2006     Jennifer Taylor, BS; Marc Stiefel, MD; Steven Y. Park, MD
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Abstract
Schwannomas of the larynx are rare, benign, slowly growing tumors. When they do occur, they are most often isolated in the aryepiglottic folds or false vocal folds. When a tumor originates in the larynx, it typically causes hoarseness and a globus sensation. As the tumor expands, it may cause dyspnea, stridor, and possibly asphyxiation as a result of the mass effect. In this article, we report an unusual case of a schwannoma of the true vocal fold in a young woman.

Schwannoma of the larynx: A case report

November 1, 2005     Farahnaz Syeda, MS; Akhtar Hussain, FRCS
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Abstract
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.

Schwannoma of the larynx

August 31, 2005     Wai-kuen Ho, FACS, FRCS; Stephen D.C. Lo, MBBS, DLO; Raymond W.M. Ng, FRCS
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Simultaneous contralateral vestibular schwannoma and glomus jugulare tumor: A case report

April 30, 2005     Ioannis Moumoulidis, MRCS; Clive Brewis, MA, FRCS; David A. Moffat, BSc, MA, FRCS
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Abstract
To the best of our knowledge, only 3 cases of a simultaneous vestibular schwannoma and a glomus jugulare tumor have been previously reported in the literature. In all 3 cases, the lesions were located on the same side. We report a new case of simultaneous vestibular schwannoma and glomus jugulare tumor that is unique in that the two lesions arose on opposite sides. The glomus tumor was treated with embolization followed by radiotherapy, while the schwannoma was managed via radiologic observation.

Cervical schwannoma

April 1, 2005     Jason Hamilton, MD; Ryan Osborne, MD; Sofia Avitia, MD; Helen Xu, MD
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Hypopharyngeal schwannoma

June 30, 2004     Peter C. Belafsky, MD, PhD; Gregory N. Postma, MD
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