title: Nasal paraganglioma: A case report and literature review.
abstract: BACKGROUND
  Paragangliomas are neuroendocrine tumors that most commonly originate in the adrenal gland, a type that is called pheochromocytoma; however, 5-10% of paragangliomas are extra-adrenal and may arise in any area between the neck and pelvic region along the sympathetic nervous system. Those located in the head and neck comprise 3% of extra-adrenal tumors, with the majority originating in the tympanic-jugular region and carotid body.
  
  
  OBJECTIVE
  To present a rare case of nasal paraganglioma and review the literature.
  
  
  METHODS
  The patient was submitted to medial subtotal maxillectomy, and her clinical findings, diagnostic data, and treatment outcome were recorded.
  
  
  CONCLUSIONS
  Paragangliomas are considered benign tumors, but they occasionally display a malignant character. The most important finding in this case was the need for total resection of the tumor to avoid recurrence.
authors.affiliation: Professor, Department of Otolaryngology.
authors.forename: Lídio
authors.initials: L
authors.lastname: Granato
authors.affiliation: Professor, Department of Otolaryngology.
authors.forename: José Donato
authors.initials: JD
authors.lastname: Próspero
authors.affiliation: Associate Professor, Department of Pathological Sciences.
authors.forename: Dino Martini
authors.initials: DM
authors.lastname: Filho
keywords: Adrenal Gland Neoplasms; Nasal Cavity; Neoplasms; Neuroendocrine Tumors; Paraganglioma