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KMID : 1103720090610010017
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Journal of the Korean Society of Radiology
2009 Volume.61 No. 1 p.17 ~ p.22
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Warthin’s Tumor of the Parotid Gland: CT and MR Features
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Yu In-Kyu
Lee Yun-Hee
Han Moon-Hee
Lee Byung-Hee
Song Chang-Joon
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Abstract
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Purpose: In this study, we have evaluated the imaging features of Warthin’s tumor of the parotid gland with the use of CT and MR imaging.
Materials and Methods: CT (n = 30) and MR (n = 7) images of 26 patients (M:F=23:3; age range, 38-76 years; mean age, 58 years) with surgically-proven Warthin’s tumor (n = 37) were reviewed with a focus on bilaterality, multiplicity, location, size, demarcation, margin, enhancement pattern and MR signal intensity.
Results: Lesions were bilateral in seven patients (27%), multiple in nine patients (35%) and unilateral multiple in four patients (15%). Tumors were located in the superficial lobe (65%), deep lobe (24%) and both lobes (11%) of the parotid gland. Most tumors had a clear (95%) and smooth margin (95%) with a round or oval shape. Tumors mainly showed a solid and cystic composition (n = 24, 65%) and all solid stroma showed poor or weak enhancement on both CT and MR images. Papillary projections from the peripheral wall were clearly seen (n = 6, 86%).
Conclusion: Warthin’s tumor is frequently seen in the parotid superficial lobe of older males with a higher bilateral and multiple tendency. Warthin’s tumor shows cystic portions with papillary projections at the wall on CT images and focal high signal intensity (SI) on T1-weighted images with dense nodular enhancement on MR images.
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KEYWORD
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Salivary glands, Adenolymphoma, Parotid gland, Parotid neoplasms, Magnetic resonance (MR), Tomography, X-ray computed
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