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Dysphagia Due to a Large Schwannoma of the Oropharynx
Case Report and Review of the Literature
Dietmar Thurnher, MD;
Christian Quint, MD;
Johannes Pammer, MD;
Wolfgang Schima, MD;
Birgit Knerer, MD;
Doris Maria Denk, MD
Arch Otolaryngol Head Neck Surg. 2002;128:850-852.
Schwannoma is a benign, encapsulated tumor that is derived from Schwann
cells. Approximately 25% to 45% of schwannomas occur in the head and neck.
The most common site is the parapharyngeal space of the neck; intrapharyngeal
occurrence is extremely rare. To our knowledge, this is the first report of
a pedunculated schwannoma in the supraglottic oropharynx. Because of the location
and mass of the tumor, the main symptom was dysphagia. The tumor was excised
via direct microlaryngoscopy, and no recurrence was seen after 2 years of
follow-up. When schwannomas are located in the pharynx, they may cause dyspnea
and dysphagia or impair phonation. Therefore, when dysphagia is present, a
thorough diagnostic procedure should be performed to evaluate the morphology
and function of the upper aerodigestive tract.
From the Departments of Otorhinolaryngology (Drs Thurnher, Quint, Knerer,
and Denk), Clinical Pathology (Dr Pammer), and Radiology (Dr Schima), the
Ludwig Boltzmann Institute for Clinical and Experimental Radiological Research
(Dr Schima), and the Section of Phoniatrics (Dr Denk), University of Vienna,
Vienna, Austria.
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