Mucoceles of the paranasal sinuses: MR imaging with CT correlation.
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.
Van Tassel
P
P
Department of Diagnostic Radiology, University of Texas, M. D. Anderson Cancer Center, Houston 77030.
Lee
Y Y
YY
Jing
B S
BS
De Pena
C A
CA
D006801:Humans; D008279:Magnetic Resonance Imaging; D009078:Mucocele / Q000175:diagnosis* / Q000000981:diagnostic imaging; D010254:Paranasal Sinus Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D010256:Paranasal Sinuses / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed