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European Archives of Oto-Rhino-Laryngology
Published in: European Archives of Oto-Rhino-Laryngology 1/2023

11-08-2022 | Magnetic Resonance Imaging | Head and Neck

Diffusion-weighted and gadolinium-enhanced dynamic MRI in parotid gland tumors

Authors: Pauline Pâris, Léa Fath, Philippe Schultz, Francis Veillon, Sophie Riehm, François Severac, Aïna Venkatasamy

Published in: European Archives of Oto-Rhino-Laryngology | Issue 1/2023

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Abstract

Purpose

To evaluate the value of diffusion-weighted imaging and dynamic contrast-enhanced MRI for the diagnosis of parotid gland tumors.

Methods

Retrospective review of patients with surgically treated parotid tumors between January 2009 and June 2020, who underwent a preoperative parotid gland MRI including standard morphological sequences, diffusion-weighted echoplanar imaging with apparent diffusion coefficient measurement and T1-weighted gadolinium-enhanced dynamic MRI sequences with Fat Saturation. The lesion was classified between malignant vs benign and precisions regarding its histological type were given when possible. Imaging findings were compared with pathology results.

Results

Inclusion of 133 patients (mean age: 53 years). Multiparametric MRI had a sensitivity of 90.3%, a specificity of 77.5%, an overall accuracy of 80.5%, a positive predictive value of 54.9% and a negative predictive value of 96.3% to differentiate benign parotid tumor from malignant ones. Specificity (85.5%) and positive predictive value (67.6%) were improved for cases, where anatomical and functional MRI characteristics were conclusive and consistent with clinical findings.

Conclusions

Combining diffusion-weighted and gadolinium-enhanced dynamic sequences, in addition to morphological ones enables high (> 90%) sensitivity to detect malignant parotid gland tumors. It also gives the possibility to characterize pleomorphic adenomas and Warthin tumors and to avoid fine-needle aspiration in cases of typical imaging presentation and reassuring clinical findings.
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Metadata
Title
Diffusion-weighted and gadolinium-enhanced dynamic MRI in parotid gland tumors
Authors
Pauline Pâris
Léa Fath
Philippe Schultz
Francis Veillon
Sophie Riehm
François Severac
Aïna Venkatasamy
Publication date
11-08-2022
Publisher
Springer Berlin Heidelberg
Published in
European Archives of Oto-Rhino-Laryngology / Issue 1/2023
Print ISSN: 0937-4477
Electronic ISSN: 1434-4726
DOI
https://doi.org/10.1007/s00405-022-07590-6

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