ethmoid sinus

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Related to Ethmoidal air cells: ethmoidal sinuses
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Noun1.ethmoid sinus - a sinus of the meatuses of the nasal cavity (behind the bridge of the nose)
sinus - any of various air-filled cavities especially in the bones of the skull
References in periodicals archive ?
As far as ethmoidal air cells are concerned only bulla ethmoidalis can be visualised with DNE which also may not be visualised well in cases with concha bullosa or gross DNS.
A CT scan revealed a large right maxillary antral mass, with areas of radiolucency and radiopacity, extending into the right nasal cavity and ethmoidal air cells (Fig.
Active secretion of contrast through the defect in the right cribriform plate defect into the middle ethmoidal air cells was noticed with a small amount of contrast pooling in right nasal cavity.
The right maxillary sinus, both sphenoids, and the left ethmoidal air cells were clear.
CT imaging to look for the source of aspergillosis showed inflammatory mucosal thickening of ethmoidal air cells bilaterally, 1 cm low density lesion in right lobe of the liver, and multiple nodules in right lung.