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Frontal sinus
Medical expert of the article
Alexey Kryvenko, medical expert
Last reviewed: 06.07.2025
Last reviewed: 06.07.2025
The frontal sinus (sinus frontalis) varies considerably in size. The septum dividing the frontal sinus into right and left parts is usually asymmetrical. The frontal sinus communicates with the middle nasal passage.
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