Primary tumours of the parapharyngeal space. Our experience in 51 patients
Keywords: نورینوماس; Parapharyngeal space; Surgical treatment; Parapharyngeal tumours; Salivary gland neoplasms; Paragangliomas; Schwannomas; Espacio parafarÃngeo; Tratamiento quirúrgico; Tumores parafarÃngeo; Tumores de glándulas salivales; Paragangliomas; Neurinomas;