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RT Journal Article
SR Electronic
T1 Fluid-Fluid Level Formation: A Rare Finding of Extracranial Head and Neck Schwannomas
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1451
OP 1453
DO 10.3174/ajnr.A1511
VO 30
IS 7
A1 Kato, H.
A1 Kanematsu, M.
A1 Mizuta, K.
A1 Aoki, M.
A1 Yamada, K.
A1 Yamakawa, H.
A1 Iwama, T.
A1 Hirose, Y.
YR 2009
UL http://www.ajnr.org/content/30/7/1451.abstract
AB SUMMARY: We present 3 cases of extracranial head and neck schwannomas exhibiting fluid-fluid levels. In the described cases, CT and MR imaging showed predominantly cystic components, intermixed with cellular components. Histopathologic examinations of excised specimens revealed hemosiderin deposition, reflecting intratumoral hemorrhages, which was presumably a cause of fluid-fluid levels. Although fluid-fluid levels are nonspecific findings, schwannoma should be considered when radiologic images demonstrate marked cystic formation with fluid-fluid levels in extracranial head and neck tumors.