Parotid Gland Lesions: Multiparametric Ultrasound and MRI Features
| Autor: | Beatrice Sacconi, Emanuele David, L. Lo Mele, F. Pandolfi, Vito Cantisani, Carlo Catalano, M. De Vincentiis, Antonio Greco, Mario Tombolini, N. Di Leo, Luca Brunese, Paul S. Sidhu, Fabrizio Calliada, Ferdinando D'Ambrosio, Giorgio Ascenti |
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| Rok vydání: | 2016 |
| Předmět: |
medicine.medical_specialty
Pathology Contrast Media Sensitivity and Specificity 030218 nuclear medicine & medical imaging Diagnosis Differential Lesion 03 medical and health sciences 0302 clinical medicine medicine Humans Parotid Gland Radiology Nuclear Medicine and imaging Ultrasonography medicine.diagnostic_test Salivary gland business.industry Ultrasound Magnetic resonance imaging Image Enhancement Magnetic Resonance Imaging Parotid Neoplasms Parotid gland medicine.anatomical_structure 030220 oncology & carcinogenesis Parotid Diseases Radiology Elastography medicine.symptom Differential diagnosis business |
| Zdroj: | Europe PubMed Central |
| ISSN: | 1438-8782 0172-4614 |
| Popis: | High-resolution ultrasound (US), as a readily available, cost-effective and harmless imaging technique, is appropriately the initial imaging modality for salivary gland lesions. Benign tumors are reported to present with regular and well-defined margins, a homogeneous hypoechoic structure and demarcated vessel distribution, whereas malignant lesions are irregular, heterogeneous and diffusely perfused. Ultrasound and color Doppler features of benign and malignant salivary gland lesions overlap, and many benign tumors, particularly pleomorphic adenomas, may appear irregularly shaped, with a heterogeneous echo-structure indistinguishable from a malignant lesion. Often skilled US operators are not always able to differentiate benign from malignant lesions. The introduction of US contrast agents has allowed further perspectives in the possible improvement of lesion characterization, and the emergence of US elastography, an innovative tool for assessing lesion stiffness/elasticity characteristics, has been advocated for differentiating salivary gland lesions. When lesions are atypical on US, contrast-enhanced magnetic resonance (MR) imaging is usually the definitive imaging modality. We present a current review of benign and malignant parotid gland tumors with emphasis on the role of multiparametric US and MR imaging. |
| Databáze: | OpenAIRE |
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