ethmoid cells

(redirected from ethmoid air cells)

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.

ethmoid cells

paranasal sinuses occurring in groups within the ethmoid bone and communicating with the ethmoidal infundibulum and bulla and the superior and highest meatus. They are often subdivided into anterior, middle, and posterior ethmoid cells, groups of air cells named according to where they open into the nasal meatus. Also called ethmoid sinuses. Compare frontal sinus, maxillary sinus, sphenoidal sinus.

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 ?
The ethmoid air cells can extend supraorbitally and is said to be present in 15% to 21% according to Bhatt NJ.
The tumor was found to be arising from the right maxillary antrum, and it extended medially to involve the middle meatus, the anterior ethmoid air cells, and the inferior turbinate.
The ethmoid air cells are present at birth and continue to grow until late puberty or until they reach compact bone (Fig.
Superiorly it was involving the ethmoid air cells and was closely adherent to dura; however no dural breach was noted.
A computed tomography scan showed extension of the nasal mass into the right-sided ethmoid air cells, through the anterior table of the frontal sinus and into the soft tissue without brain or lymph node metastases.
Rennels described as a "poor engineering feature," only a very thin layer of bone--the lamina papyracea, or paper lamina--separates the ethmoid air cells from the posterior orbit.
Mass was removed in toto and complete exenteration of all ethmoid air cells were done.
Magnetic resonance imaging (MRI) demonstrated a contrast-enhancing mass within the anterior ethmoid air cells on the left, with a small amount of intracranial extension through the cribriform plate (figure 2).
Supraorbital ethmoidal cells: The ethmoid air cells can extend supraorbitally and is said to be present in 15% to 21% according to Bhatt NJ.
Four years later, pre-reconstructive CT detected a confluent soft-tissue density in the left ethmoid air cells.
The intra and extramural pneumatisation of the ethmoid air cells was seen in 70% of the cases, with the Agger nasi cells being most common type.