Presentation
Persistent cough after covid-19 pneumonia.
Patient Data
Age: 30 years
Gender: Female
From the case:
Normal paranasal sinuses x-ray series
![](https://prod-images-static.radiopaedia.org/images/60025216/4d7c62face8f3c31d1ca87970c06041d3ed00e38ef352974bbfd42e28d03389b_thumb.jpeg)
![](https://prod-images-static.radiopaedia.org/images/60025217/a26e62e62f788d1207b5e2554769e809cf55100332d63b7311d4568f605e3427_thumb.jpeg)
![](https://prod-images-static.radiopaedia.org/images/60025218/1e6f7757e84d4db370b7c8dd4466126b753aa3d24aa0794f1ebccc185b39314e_thumb.jpeg)
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Info
![](https://prod-images-static.radiopaedia.org/images/60025216/4d7c62face8f3c31d1ca87970c06041d3ed00e38ef352974bbfd42e28d03389b_big_gallery.jpeg)
No air-fluid level seen within imaged paranasal sinuses, bony orbital margins intact.
Case Discussion
Three views are often performed to demonstrate the paranasal sinuses on plain film. Below are the views and the sinuses that are best demonstrated in that position.
occipitofrontal (OF) - frontal sinuses
occipitomental (OM) with open mouth - maxillary sinuses and ethmoidal sinuses
lateral - ethmoidal sinuses