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...

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Bibliographic Details
Published inAmerican journal of neuroradiology : AJNR Vol. 10; no. 3; pp. 607 - 612
Main Authors VAN TASSEL, P, YA-YEN LEE, BAO-SHAN JING, DE PENA, C. A
Format Journal Article
LanguageEnglish
Published Oak Brook, IL American Society of Neuroradiology 1989
Subjects
Biological and medical sciences
Medical sciences
Non tumoral diseases
Otorhinolaryngology. Stomatology
Upper respiratory tract, upper alimentary tract, paranasal sinuses, salivary glands: diseases, semeiology
Mucocele
ENT disease
Computerized axial tomography
Radiodiagnosis
Paranasal sinus
Nuclear magnetic resonance imaging
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Summary: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.
ISSN:0195-6108
1936-959X