Abstract
Extended parotid tumors require a precise preoperative assessment. Imaging is an indispensable part of the diagnostic work-up. The algorithm for the imaging of extended or suspected extended parotid tumors is basically easy to describe: If available, ultrasonography gives a first overview about the tumor. It can be combined with fine-needle aspiration cytology to get first information if the tumor is benign or malignant. The exact extent of an extended parotid tumor is most often not to be determined by ultrasonography, especially when the tumor is located in the deep parotid lobe. High-resolution magnetic resonance imaging (MRI) is mandatory to delineate the exact borders of the tumor and its extent into surrounding structures. If MRI is not available or contraindicated, computed tomography (CT) is an alternative. Furthermore, CT allows a good evaluation of the relation of the parotid tumor to the bony skull base. The chapter presents in detail the advantages and disadvantages of ultrasonography, MRI, and CT. Furthermore, the role of other imaging technique like of contrast-enhanced positron emission tomography (PET) together with CT (PET-CT) is discussed.
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Guntinas-Lichius, O., Burmeister, H.P. (2016). The Diagnostic Imaging of Extended Parotid Tumors. In: Costan, VV. (eds) Management of Extended Parotid Tumors. Springer, Cham. https://doi.org/10.1007/978-3-319-26545-2_11
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DOI: https://doi.org/10.1007/978-3-319-26545-2_11
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