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American Journal of Roentgenology, Vol 153, Issue 2, 407-412
Copyright © 1989 by American Roentgen Ray Society

Articles

Mucoceles of the paranasal sinuses: MR imaging with CT correlation

P Van Tassel, YY Lee, BS Jing, and CA De Pena

Department of Diagnostic Radiology, University of Texas, M. D. Anderson Cancer Center, Houston 77030.

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.
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Copyright © 1989 by the American Roentgen Ray Society.