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RT Journal Article
SR Electronic
T1 Mucoceles of the Paranasal Sinuses: MR Imaging with CT Correlation
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 607
OP 612
VO 10
IS 3
A1 Van Tassel, Pamela
A1 Lee, Ya-Yen
A1 Jing, Bao-Shan
A1 De Pena, Charles A.
YR 1989
UL http://www.ajnr.org/content/10/3/607.abstract
AB The MR findings in six cases of paranasal sinus mucoceles are described. Two basic MR appearances were encountered: either moderate to marked signal hypointensity in the expanded sinuses on T1- and T2-weighted images (four patients) or moderate to marked signal hyperintensity on T1- and T2-weighted images (two patients). These patterns appear to represent inspissated or hydrated sinus contents, respectively. CT correlation revealed hyperdense mucoceles in the decreased MR signal group and hypo- or isodense mucoceles in the increased MR signal group. Superimposed allergic Aspergillus sinusitis was also present in two patients with hypointense mucoceles on MR.