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Journal of Radiological Review 2021 December;8(4):292-301

DOI: 10.23736/S2723-9284.21.00149-2

Copyright © 2021 EDIZIONI MINERVA MEDICA

lingua: Inglese

Multimodality imaging of parotid gland oncocytoma: a pictorial review

Simone SACCO 1, 2, Pascal LOMORO 3, Francesco BALLATI 1, Dario BOCCUZZI 1, Sara IMPARATO 4, Francesca RUJU 5, Olivia BOTTINELLI 1, Barbara VISCHIONI 6, Mohssen ANSARIN 7, Lorenzo PREDA 1, 8

1 Department of Clinical Surgical Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy; 2 Division of Neuroimaging, Department of Medical Imaging, University of Toronto, Toronto, ON, Canada; 3 Department of Radiology, Valduce Hospital, Como, Italy; 4 Unit of Diagnostic Imaging, National Center of Oncological Hadrontherapy (CNAO), Pavia, Italy; 5 Department of Radiology, IRCCS European Institute of Oncology, Milan, Italy; 6 Unit of Radiotherapy, National Center of Oncological Hadrontherapy (CNAO), Pavia, Italy; 7 Department of Otolaryngology-Head and Neck Surgery, IRCCS European Institute of Oncology, Milan, Italy; 8 Department of Radiology, IRCCS San Matteo Polyclinic, Pavia, Italy



Parotid gland tumors include a wide range of entities, ranging from benign lesions such as pleomorphic adenoma and Warthin’s tumor, to aggressive malignant lesions such as carcinoma and lymphomas. Oncocytoma (OC) is a rare benign salivary gland tumor characterized by slow growth over years. It almost exclusively occurs within the parotid gland of elderly, accounting for about 1% of all salivary gland neoplasms. Distinguishing OC from other benign lesions and sometime from malignant lesions can be difficult. This pictorial review examines 8 cases of salivary gland lesions from our institute, including 5 histologically verified oncocytic lesions. We will discuss specifically the MRI and ultrasound appearance of OC regarding diagnostic clues as well as differential diagnoses.


KEY WORDS: Adenoma, oxyphilic; Parotid gland; Neoplasms; Ultrasonography; Magnetic resonance imaging; Diffusion magnetic resonance imaging

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