Magnetic resonance imaging of myoepithelioma in the salivary glands
| Autor: | Tohru Kurabayashi, Akemi Tetsumura, Ami Kuribayashi, Norio Yoshino, Akiko Imaizumi |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Pathology
medicine.medical_specialty Floor of mouth medicine.diagnostic_test Myoepithelioma business.industry Myoepithelial cell Magnetic resonance imaging medicine.disease Benign tumor medicine.anatomical_structure Dynamic contrast-enhanced MRI medicine Radiology Nuclear Medicine and imaging Dentistry (miscellaneous) Hard palate business Diffusion MRI |
| Zdroj: | Oral Radiology. 29:87-91 |
| ISSN: | 1613-9674 0911-6028 |
| DOI: | 10.1007/s11282-012-0109-x |
| Popis: | Myoepithelioma is a rare benign tumor composed of cells showing myoepithelial differentiation and accounts for only 1.5 % of all tumors in the major and minor salivary glands. Herein, we report the magnetic resonance imaging (MRI) findings, including dynamic contrast-enhanced MRI (DCE-MRI) and diffusion-weighted MRI (DW-MRI), of two cases of myoepithelioma occurring in the salivary glands of the floor of the mouth and the hard palate. Both tumors were seen as well-defined ovoid masses with low or intermediate signal intensity on T1-weighted images, and inhomogeneous high signal intensity areas on T2-weighted images, whereas inhomogeneous enhancement was seen on post-contrast T1-weighted images. On DCE-MRI, both tumors showed a time–intensity curve of early enhancement and a low washout pattern (plateau enhancement pattern). Their apparent diffusion coefficients measured on DW-MRI were both relatively low (1.12 × 10−3 and 0.76 × 10−3 mm2/s). The findings for these two myoepitheliomas on DCE-MRI and DW-MRI were dissimilar to those in previous reports. |
| Databáze: | OpenAIRE |
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