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Allergic fungal sinusitis: CT findings

S K Mukherji¹, R E Figueroa, L E Ginsberg

¹Department of Radiology, University of North Carolina School of Medicine, Chapel Hill 27599-7510, USA.

|May 13, 1998

Summary

Computed tomographic (CT) findings in allergic fungal sinusitis include increased intrasinus attenuation and sinus wall changes. These CT findings can suggest allergic fungal sinusitis, prompting further diagnostic evaluation.

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Area of Science:

Radiology
Otolaryngology
Pathology

Background:

Allergic fungal sinusitis is a distinct clinical entity.
It presents with nonspecific symptoms.
Early CT findings can suggest the diagnosis.

Purpose of the Study:

To determine computed tomographic (CT) findings in patients with allergic fungal sinusitis.
To identify characteristic imaging features of this condition.

Main Methods:

Retrospective review of CT scans and histopathologic reports from 45 patients.
Evaluation of CT scans by two head and neck radiologists.
Assessment for intrasinus high-attenuation, sinus involvement extent, bone changes, and soft tissue extension.

Main Results:

Allergic fungal sinusitis is more prevalent in males aged 20-30 years.
All patients exhibited increased intrasinus attenuation on non-contrast CT.
Common findings included multiple sinus involvement, complete opacification, sinus wall expansion, thinning, and erosion.

Conclusions:

CT findings can suggest allergic fungal sinusitis.
These findings warrant further diagnostic studies.
Early identification aids in establishing a treatment plan.