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Il Giornale Italiano di Radiologia Medica 2018 Novembre-Dicembre;5(6):777-82

DOI: 10.23736/S2283-8376.18.00142-0

Copyright © 2018 EDIZIONI MINERVA MEDICA

language: Italian

Myoepithelioma of the parotid gland: a hard-differential diagnosis at imaging. A case in a 68-years-old woman

Antonio L. ANNESE 1, Michele PIETRAGALLA 2, Matteo MASTROROSATO 1, Giovanni B. VERRONE 1, Cosimo NARDI 2, Cecilia TAVERNA 3, Francesco MUNGAI 1, Luigi BONASERA 1 , Vittorio MIELE 1

1 Dipartimento di Diagnostica per Immagini, Azienda Ospedaliero-Universitaria Careggi, Firenze, Italia; 2 Dipartimento di Scienze Biomediche, Sperimentali e Cliniche “Mario Serio”, Università degli Studi di Firenze, Firenze, Italia; 3 Divisione di Anatomia Patologica, Dipartimento di Chirurgia e Medicina Traslazionale, Università degli Studi di Firenze, Firenze, Italia


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Myoepithelioma is a rare benign neoplasm that represent about 1-1.5% of all the tumors that affect the salivary glands. Most commonly it occurs in the parotid gland (40-50%). The neoplasm takes origin from myoepithelial cells present in the basal lamina that enwrap the glandular acinus. The most common clinical presentation is a slow growing, painless mass, mobile with respect to deep structures, without signs of invasions of surrounding structures or V and VII cranial nerves deficit. Myoepithelioma gets into differential diagnosis with a large number of parotid’s lesions, especially pleomorphic adenoma. Diagnosis is almost impossible at imaging and it is usually reached through histopathological and immunohistochemical examinations. We describe a case of a parotid gland’s myoepithelioma in a 68-years-old woman who came to our Institute to undergo an MRI evaluation of a mass in right parotid region.


KEY WORDS: Myoepithelioma - Head and neck neoplasms - Parotid gland - Magnetic resonance imaging

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