| Autor: |
Kato H; Department of Radiology, Gifu University School of Medicine, Gifu, Japan. hkato@gifu-u.ac.jp, Kanematsu M, Mizuta K, Aoki M, Kuze B, Ohno T, Oshima K, Hirose Y |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of magnetic resonance imaging : JMRI [J Magn Reson Imaging] 2010 Mar; Vol. 31 (3), pp. 703-5. |
| DOI: |
10.1002/jmri.22071 |
| Abstrakt: |
The authors present two cases of extracranial head and neck schwannomas that exhibited the "flow-void" sign at MR imaging. In the described cases, MR images showed intratumoral signal voids, which corresponded to dilated vessels. Dynamic contrast-enhanced CT also demonstrated dilated vessels within the tumors on the arterial phase and tumor parenchymal enhancement on the delayed phase. Histopathologic examinations of excised specimens revealed thin-walled, dilated abnormal vessels with or without hyaline degeneration. Schwannoma should be considered when MR images demonstrate the "flow-void" sign in extracranial head and neck tumors. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
Plný text