ethmoid cells

(redirected from ethmoidal sinuses)

eth·moid cells

ethmoidal air cells; evaginations of the mucous membrane of the middle and superior meatus of the nasal cavity into the ethmoidal labyrinth forming multiple small paranasal sinuses; they are subdivided into anterior, middle and posterior ethmoidal sinuses. See: anterior ethmoidal cells, middle ethmoidal cells, posterior ethmoidal cells.

eth·moid cells

(ethmoyd selz)
Evaginations of the mucous membrane of the middle and superior meatus of the nasal cavity into the ethmoidal labyrinth forming multiple small paranasal sinuses.

eth·moid cells

(ethmoyd selz)
Ethmoidal air cells; evaginations of mucous membrane of middle and superior meatus of nasal cavity into ethmoidal labyrinth forming multiple small paranasal sinuses; subdivided into anterior, middle and posterior ethmoidal sinuses.
See: anterior ethmoidal cells
Synonym(s): ethmoidal sinuses.
References in periodicals archive ?
CT PNS revealed chronic sinusitis of bilateral maxillary and ethmoidal sinuses, bilateral CSOM.
They are most likely to be seen in the frontal and ethmoidal sinuses and less frequently--in the maxillary and sphenoidal sinuses.
Nasal Cavity and Paranasal Sinuses CT Scan showing the Bilateral Involvement of Nasal Cavities, Ethmoidal Sinuses and Right Maxillary Sinus
highlighted the greater risk of optic neuropathy and poor visual outcome with sphenoid sinus, and fronto-ethmoidal mucoceles especially with the involvement of the posterior ethmoidal sinuses. (15)
Plain X-ray of the sinuses showed 72.5% of bilateral disease with involvement of maxillary and ethmoidal sinuses. 16.7% of controls who had only headache without nasal symptoms had incidental mild haziness of maxillary sinuses on one side.
The normal mucociliary clearance in which the anterior group of sinuses like frontal, maxillary, and anterior ethmoidal sinuses drain along the anterior and inferior part of pharyngeal end of Eustachian tube.
CT scan with contrast of the paranasal sinus showed a homogenous soft tissue density in the region of the middle meatus extending medially to the septum, superiorly to the skull base, posteriorly to ethmoidal sinuses, laterally breeching the lamina papyraceae of the orbit, contrast enhancement was seen in this lesion (Figure 2).
There is compensatory thickening of skull vault with enlargement of left frontal and ethmoidal sinuses, enlarged left mastoid air cells with elevation of petrous part of left temporal bone.
CT scan PNS showed pus in the left upper lid, pus in the left ethmoidal sinuses and the left eyeball was pushed anterolaterally (Fig.
The pathophysiology of fronto-ethmoid mucoceles has been lightened in experimental studies and by clinical observations that the trapped mucosa in the frontal and ethmoidal sinuses after obstruction of sinus ostia (8).