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2026

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/232315

Importance of magnetic resonance in the diagnosis of pleomorphic parotid adenoma. Clinical case series

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Background: Parotid tumours account for approximately 3% of head and neck neoplasms, of which nearly 80% are benign. The most common being the Pleomorphic Adenoma (PA). Our objective was to analyze the morphological characteristics of the PA by Magnetic Resonance (MRI scan) and how it behaves in advanced diffusion (ADC-Apparent Diffusion Coefficient- value) and perfusion sequences. Material and Methods: Descriptive and inter-observer study of patients with a suspected PA diagnosis in an MRI scan and subsequent histological confirmation. All studies were carried out with the same MRI. The MRI protocol included enhanced sequences in T1 (T1W), T2 (T2W) diffusion study (DWI) and enhanced sequences in T1 with fat saturation (T1W FS) after injecting the contrast. Results: Of 113 patients that underwent magnetic resonance imaging due to a palpable nodule in the parotid region, a radiological diagnosis of Pleomorphic Adenoma (PA) was established in 56 patients. Thirteen were excluded due to a prior histopathological diagnosis, 39 of the 43 cases with suspected PA were confirmed (90.67%). They were morphologically well-defined homogeneous tumors, with an average value of high ADC (1.85x10-3mm2/s) and a type A perfusion curve (associated to benignity). The inter-observer concordance was 100%. Conclusions: PAs show typical morphological characteristics in an MRI scan. In case of diagnostic doubt, the diffusion and perfusion sequences help establish a definitive diagnosis.

Recurs relacionat

https://doi.org/10.4317/medoral.27991

Matèries

Paròtides, Tumors de la boca

Matèries (anglès)

Parotid glands, Mouth tumors

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Col·leccions

Articles publicats en revistes (Odontoestomatologia)
Articles publicats en revistes (Institut d'lnvestigació Biomèdica de Bellvitge (IDIBELL))

Citació

PAZ EXPÓSITO, José, et al. Importance of magnetic resonance in the diagnosis of pleomorphic parotid adenoma. Clinical case series. Medicina Oral. Patologia Oral y Cirugia Bucal. Vol.  2026, num. 31, pags. 4. ISSN 1698-4447. [consulted: 29 of October of 2026]. Available at: https://hdl.handle.net/2445/232315

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