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Oncocytoma: the vanishing parotid mass
N D Patel1, A van Zante, D W Eisele
1Department of Radiology and Biomedical Imaging, University of California-San Francisco, San Francisco, California, USA. nandini.patel@ucsf.edu
AJNR. American Journal of Neuroradiology
|July 16, 2011
Summary
Parotid gland oncocytomas are rare, benign tumors. MR imaging shows they are isointense to the native gland on specific sequences, aiding in diagnosis.
Area of Science:
- Radiology
- Oncology
- Pathology
Background:
- Parotid gland oncocytoma is an uncommon, benign salivary neoplasm.
- Distinguishing oncocytomas from other parotid tumors is crucial for surgical planning.
Observation:
- This study retrospectively reviewed MR imaging features in 9 patients with parotid gland oncocytoma.
- Imaging findings were consistent across 8 of the 9 patients.
Findings:
- Parotid gland oncocytomas exhibit specific MR imaging characteristics.
- Lesions are T1 hypointense but isointense to the native parotid gland on fat-saturated T2 and postcontrast T1 imaging.
- These features differentiate oncocytomas from other benign and malignant parotid tumors.
Implications:
- Specific MR imaging findings can help identify parotid gland oncocytomas.
- Preoperative diagnosis of oncocytoma can optimize surgical planning and patient management.
