Oncocytic carcinoma of the parotid gland with late cervical lymph node metastases: a case report.
BACKGROUND
Oncocytic carcinoma is a rare proliferation of cytomorphologically malignant oncocytes mainly found in glandular tissue, accounting for 0.5% of all epithelial salivary gland malignancies and 0.18% of all epithelial salivary gland tumors.


METHODS
We report a case of oncocytic carcinoma arising in the parotid gland of a 65-year-old Caucasian man. Our patient initially underwent left superficial parotidectomy, including the removal of the mass. A close follow-up was made, and four years after first surgery cervical lymph node metastases were confirmed. Therefore, a complete parotidectomy and radical neck dissections were performed. There were no complications and no sign of recurrence after six months of follow-up.


CONCLUSIONS
Oncocytic carcinoma is an extremely rare malignancy in the salivary glands. Prophylactic neck dissection may be indicated for tumors larger than 2 cm in diameter (our patient's tumor was 2.5 cm at its greatest diameter). The clinical course of our patient, with the appearance of cervical lymph node metastases after four years of follow-up, supports this approach. Further investigation of the prognosis and correct treatment of patients with oncocytic carcinoma are required as more cases are reported.
University of Oviedo Dental School, Spain. Junquera@uniovi.es.
Lorena
L
Gallego
Luis
L
García-Consuegra
Eduardo
E
Fuente
Nicolás
N
Calvo
Luis
L
Junquera
Otolaryngol Head Neck Surg. 2002 Jun;126(6):657-62
12087334
Eur Arch Otorhinolaryngol. 2005 Jul;262(7):567-9
15592856
World J Surg Oncol. 2006 Aug 21;4:54
16923179
Histopathology. 1997 Nov;31(5):408-11
9416480
J Oral Pathol Med. 1998 May;27(5):225-8
9682986
J Oral Maxillofac Surg. 1999 Mar;57(3):325-8
10077205
Ear Nose Throat J. 2003 Sep;82(9):699-701
14569705
Oral Surg Oral Med Oral Pathol. 1988 Jan;65(1):61-6
3422397
Cancer. 1976 Sep;38(3):1306-17
953970
Am J Surg Pathol. 1991 Jun;15(6):514-28
2031528