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Table 3 Prevalences (%) of paranasal sinus opacifications in 982 non-selected adult participants on MRI, using alternative cut-off values for mucosal thickening*

From: Incidental findings in MRI of the paranasal sinuses in adults: a population-based study (HUNT MRI)

Cut-off

Maxillary

Anterior ethmoid

Posterior ethmoid

Frontal

Sphenoid

>3 mm*

26

4

4

2

3.5

>4 mm*

25

3

2.8

1.4

3.2

  1. Prevalence of opacifications with respective cut-offs for mucosal thickening, and with polyps/retention cysts and fluid if >0 mm.
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BMC Ear, Nose and Throat Disorders

ISSN: 1472-6815

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