title: [Masseter oncocytoma of parotid origin].
abstract: BACKGROUND
  Tumors developed in a salivary ectasia of the parotid gland are very rare. The authors describe a case of oncocytoma developed in such an ectopy.
  
  
  METHODS
  The tumor located in the parotid region was observed in a 79-year old man. There was no facial palsy, no pain, and no cervical adenopathy. MRI was the most helpful to localize and characterize the tumor. Surgical resection was performed after a parotidectomy. Histology confirmed the diagnosis.
  
  
  CONCLUSIONS
  The physiopathology of this rare entity is discussed with a literature review. It might correspond to a mitochondrial anomaly.
authors.affiliation: Département d'ORL et de chirurgie cervicofaciale, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France. pierre.bonfils@egp.aphp.fr
authors.forename: P
authors.initials: P
authors.lastname: Bonfils
authors.forename: E
authors.initials: E
authors.lastname: Frydman
authors.forename: T
authors.initials: T
authors.lastname: Meatchi
authors.forename: M
authors.initials: M
authors.lastname: Mimoun
authors.forename: N
authors.initials: N
authors.lastname: De Preobrajenski
mesh_terms: D018249:Adenoma, Oxyphilic / Q000473:pathology*; D000368:Aged; D002828:Choristoma / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008406:Masseter Muscle / Q000473:pathology*; D008928:Mitochondria / Q000473:pathology; D010306:Parotid Gland