Resumen

CAPITAN CANADAS, L.M. et al. Giant parapharyngeal schwannoma: Differential diagnosis and therapeutic approach. Rev Esp Cirug Oral y Maxilofac [online]. 2005, vol.27, n.4, pp.217-224. ISSN 2173-9161.

Expansive processes of parapharyngeal location represent between 0.5% and 0.8% of all tumorous lesions in the head and neck. In their differential diagnosis, one of the main considerations that must be kept in mind due to their high frequency are neurogenic lesions (25-45% incidence in the head and neck) with an evolution that is slow and expansive growth, clinical repercussions are minimal in the majority of cases. A correct anamnesis, accompanied by imaging tests (CT, MR, arteriography), is informative for the diagnosis of this type of lesion with a neurogenic origin. The most agreed upon therapeutic option is surgical removal with embolization of the tumor 24-48 hours before the operation being necessary in certain situations. We present a case of giant parapharyngeal schwannoma, that was practically asymptomatic, and had been developing for approximately 5 years, putting special emphasis on diagnostic and therapeutic management, as well as an updated review of the possible differential diagnoses of parapharyngeal masses and the protocols for working with this type of lesion.

Palabras clave : Parapharyngeal space; Head and neck neurinoma; Schwannoma.

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