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The ethmoid sinuses or ethmoid air cells of the ethmoid bone are one of the four paired paranasal sinuses. [1] Unlike the other three pairs of paranasal sinuses which consist of one or two large cavities, the ethmoidal sinuses entail a number of small air-filled cavities ("air cells"). [2]
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21 sty 2018 · The ethmoid sinus (one of six sets of sinuses) is part of the paranasal sinus system and is located between the nose and eyes. It is very small at birth and becomes walnut-sized during...
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18 lis 2023 · When these sinuses become inflamed or infected, it leads to ethmoid sinus disease, causing discomfort and various symptoms. Understanding the symptoms, treatment options, and the role of imaging techniques is important in managing this condition effectively.
Axial image showing normal ethmoid sinus anatomy. Arrows point to the lateral attachment of the basal lamellae to lamina papyracea separating anterior and posterior ethmoid sinuses (AE: anterior ethmoid, PE: posterior ethmoid, NS: nasal septum, SpS: sphenoid sinus)
The ethmoid sinuses are composed of 3-18 pairs of air cells within the ethmoid labyrinth and can be divided into anterior, middle and posterior ethmoid cells with distinct drainage locations in the nasal cavity. These thin-walled cavities can invade the other paranasal sinuses. Relations to surrounding structures are as follows: