paranasal sinus

X-ray of

human skull in frontal view with paranasal sinuses.

Wikipedia • CC BY-SA 3.0

X-ray of

human skull with paranasal sinuses.

Wikipedia • CC BY-SA 3.0

Sehr groß

ausgebildete Stirnhöhle im Röntgenbild des menschlichen Schädels, im Bild eingefärbt.

Wikipedia • CC BY-SA 3.0

Ethmoidal air

cells • Paranasal sinuses: annotated CT - Ganzer Fall bei Radiopaedia

Cheng J, Paranasal sinuses: annotated CT. Case study, Radiopaedia.org (Accessed on 19 Nov 2022) https://doi.org/10.53347/rID-56635 • CC by-nc-sa 3.0 (modified)

Paranasal

sinuses • Normal paranasal sinuses x-ray series - Ganzer Fall bei Radiopaedia

Tan W, Normal paranasal sinuses x-ray series. Case study, Radiopaedia.org (Accessed on 11 Dec 2022) https://doi.org/10.53347/rID-155890 • CC by-nc-sa 3.0 (modified)

Petrous part

of temporal bone • Normal paranasal sinuses and petrous temporal bones - Ganzer Fall bei Radiopaedia

Glick, Y. Normal paranasal sinuses and petrous temporal bones. Case study, Radiopaedia.org. (accessed on 24 Oct 2022) https://doi.org/10.53347/rID-53200 • CC by-nc-sa 3.0 (modified)

Radiopaedia • CC-by-nc-sa 3.0 • de

The paranasal sinuses usually consist of four paired air-filled spaces. They have several functions of which reducing the weight of the head is the most important. Other functions are air humidification and aiding in voice resonance. They are named for the facial bones in which they are located:

Variant anatomy

The paranasal sinuses are subject to marked variation between individuals and between sides in the same individual, regarding size (aeration) and bony septations. Total paranasal sinus agenesis is very rare . Isolated frontal sinus agenesis, on the other hand, is common.