Parapharyngeal tumors - From the clinical aproach to the diagnosis
DOI:
https://doi.org/10.34631/sporl.614Keywords:
parapharyngeal tumors, pleomorphic adenoma, schwannoma, paragangliomaAbstract
Introduction: Parapharyngeal tumors are rare, representing about 0.5% of all head and neck tumors. Most (80%) are benign. Primitive tumors correspond to 90% of the cases (40% to 50% originating from the salivary glands and from 25% to 40% with neurogenic origin). They are asymptomatic in the initial stage. The diagnosis is made when the tumor reaches 3 cm, manifesting as an oropharyngeal or cervical mass. The clinical presentation is similar regardless the histological type.
Material and methods: We reviewed the literature and reported three cases operated on the Otorhinolaryngology Department of the Hospital Garcia de Orta.
Results: The reviewed cases illustrate the most common etiologies (pleomorphic adenoma, schwannoma and paraganglioma) which are clinically similar.
Discussion and conclusions: However, a careful analysis of the lesion topography on clinical exam, assisted by TC and MRI (which is more specific) allow a precise surgical planning for the resection of the tumor and definitive histopathological diagnosis.
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