Diagnostic imaging of parotid gland oncocytoma: a pictorial review with emphasis on ultrasound assessment.
Color doppler
Oncocytoma
Parotid gland
Tumor
Ultrasound
Journal
Journal of ultrasound
ISSN: 1876-7931
Titre abrégé: J Ultrasound
Pays: Italy
ID NLM: 101315005
Informations de publication
Date de publication:
Sep 2021
Sep 2021
Historique:
received:
18
05
2020
accepted:
13
07
2020
pubmed:
28
7
2020
medline:
20
11
2021
entrez:
26
7
2020
Statut:
ppublish
Résumé
Parotid gland oncocytoma (PGO) is a rare benign epithelial tumor that usually occurs in the elderly population. The most common clinical presentation is a painless, slow-growing, non-tender, lobulated, and mobile mass. Histologically, it is composed of monotonous sheets of epithelial cells (oncocytes) with a central scar. The cross-sectional appearance is not specific, and it overlaps with other parotid lesions. On ultrasound (US), oncocytoma appears as an ovoid, well-defined, homogeneous, and hypoechoic lesion. Cystic and hemorrhagic areas as well as intralesional fat may be observed. Doppler analysis shows intratumoral vessels, sometimes with a spoke-wheel pattern. The peak systolic flow is high (up to 100 cm/sec). Furthermore, oncocytoma is avid of FDG on a PET scan, as well as a malignant tumor. Thus, a combined clinical, imaging, and pathologic assessment is essential to establish the most accurate diagnosis and plan the best treatment. US, combined with Doppler techniques, can play an important role in suggesting the diagnosis and confirming it through percutaneous sampling. The purpose of this review is to show the imaging findings in PGO, with special emphasis on the US appearance.
Identifiants
pubmed: 32710434
doi: 10.1007/s40477-020-00511-5
pii: 10.1007/s40477-020-00511-5
pmc: PMC8363736
doi:
Types de publication
Journal Article
Review
Langues
eng
Sous-ensembles de citation
IM
Pagination
241-247Informations de copyright
© 2020. Società Italiana di Ultrasonologia in Medicina e Biologia (SIUMB).
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