title: Oncocytic carcinoma of the parotid gland.
abstract: BACKGROUND
  Oncocytic carcinoma is a rare tumor of major salivary glands. Despite being described 5 decades ago, not much is known about these rare tumors. Histochemical or electron microscopic confirmation of the oncocytic nature of the tumor cell is needed for differential diagnosis. The main treatment modality is surgery with or without adjuvant radiotherapy. Malignant oncocytomas have the potential risk of developing distant metastases and demand long term follow-up after therapy.
  
  
  METHODS
  A 58-year old man presented with a recurrent mass in the left parotid gland with a prior diagnosis of monomorphic adenoma in the same localization which had been treated by tumor excision in July 2002. Left superficial parotidectomy followed by radiotherapy into tumor bed and upper neck were carried out in September 2004. To date, he has had no evidence of recurrence for 14 months.
  
  
  CONCLUSIONS
  For an accurate approach in the management of patients, oncocytic adenocarcinoma should be considered in the differential diagnosis of lesions of the parotid gland, most of which are benign.
authors.affiliation: Department of Radiation Oncology, Faculty of Medicine, Trakya University, Edirne, Turkey. caloglumurat@hotmail.com
authors.forename: Murat
authors.initials: M
authors.lastname: Caloglu
authors.forename: Vuslat
authors.initials: V
authors.lastname: Yurut-Caloglu
authors.forename: Semsi
authors.initials: S
authors.lastname: Altaner
authors.forename: Gulara
authors.initials: G
authors.lastname: Huseyinova
authors.forename: Ercument
authors.initials: E
authors.lastname: Unlu
authors.forename: Hakan
authors.initials: H
authors.lastname: Karagol
authors.forename: Cem
authors.initials: C
authors.lastname: Uzal
mesh_terms: D018249:Adenoma, Oxyphilic / Q000473:pathology* / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010307:Parotid Neoplasms / Q000473:pathology* / Q000628:therapy*; D035583:Rare Diseases / Q000473:pathology / Q000628:therapy