ethmoid sinus

(redirected from Ethmoidal air cells)
Also found in: Dictionary, Thesaurus.
Related to Ethmoidal air cells: ethmoidal sinuses

ethmoid sinus

An air cavity or space within the ethmoid bone, opening into the nasal cavity.

ethmoid sinus

Any of the 3-18 paranasal sinuses on each side of the skull in and adjacent to the ethmoid bone. The ethmoid sinuses can be categorized as anterior, middle, or posterior, with each group usually draining into a different part of the nasal cavity. Ethmoid sinuses have very thin walls and are interconnected via openings in the septa between the sinuses.
See also: sinus
References in periodicals archive ?
OF EYES (%) Total Test of significance External Endonasal LOCAL 26 (86.67) 27 (90) 53(88.33) P = 1.0 (Fisher's GENERAL 4 (13.33) 3 (10) 7(11.67) exact test) TOTAL 30 (100) 30 (100) 60(100) TABLE 5: INTRA OPERATIVE COMPLICATIONS COMPLICATIONS EXTERNAL ENDONASAL No: % No: % Moderate bleeding 7 23.33 5 16.67 Tearing of anterior 2 6.67 0 0 nasal flap Laceration of punctum 0 0 0 0 Accidental entry into 0 0 1 3.33 ethmoidal air cells Trauma to middle 0 0 1 3.33 turbinate Difficulty in making 0 0 2 6.67 a bony window TABLE 6: POST OPERATIVE COMPLICATIONS AFTER EXTERNAL AND ENDONASALDACRYOCYSTORHINOSTOMY COMPLICATIONS EXTERNAL No.
The mass appeared to be arising from the left anterior ethmoidal air cells and from lateral wall.
Bolger et al., reported this pneumatisation in 53% of the sinus patients, as an extension of the anterior air cells (55%) or posterior (45%) ethmoidal air cells (22).
However, OMC is often referred to the area encompassed by: (a) The ostium of maxillary sinus, the ostia of anterior ethmoidal air cells, the frontonasal duct (frontal recess), the ethmoidal infundibulum, and the middle meatus and (b) The sphenoethmoidal recess and the superior meatus (7).