middle nasal concha

(redirected from Middle concha)

concha

 [kong´kah] (pl. con´chae) (L.)
a shell-shaped structure.
concha of auricle the hollow of the auricle of the external ear, bounded anteriorly by the tragus and posteriorly by the antihelix.
inferior nasal concha a bone forming the lower part of the lateral wall of the nasal cavity.
middle nasal concha the lower of two bony plates projecting from the inner wall of the ethmoidal labyrinth and separating the superior from the middle meatus of the nose.
sphenoidal concha a thin curved plate of bone at the anterior and lower part of the body of the sphenoid bone, on either side, forming part of the roof of the nasal cavity.
superior nasal concha the upper of two bony plates projecting from the inner wall of the ethmoidal labyrinth and forming the upper boundary of the superior meatus of the nose.
supreme nasal concha a third thin bony plate occasionally found projecting from the inner wall of the ethmoidal labyrinth, above the two usually found.

mid·dle nasal con·cha

[TA]
1. the middle thin, spongy, bony plate with curved margins, part of the ethmoidal labyrinth, projecting from the lateral wall of the nasal cavity and separating the superior meatus from the middle meatus;
2. the above bony plate and its thick mucoperiosteum containing a cavernous vascular bed for heat exchange.

mid·dle na·sal con·cha

(mid'ĕl nā'zăl kong'kă) [TA]
1. The middle thin, spongy, bony plate with curved margins, part of the ethmoidal labyrinth, projecting from the lateral wall of the nasal cavity and separating the superior meatus from the middle meatus.
2. The above bony plate and its thick mucoperiosteum containing a cavernous vascular bed for heat exchange.

mid·dle na·sal con·cha

(mid'ĕl nā'zăl kong'kă) [TA]
Middle thin, spongy, bony plate with curved margins, part of ethmoidal labyrinth.
References in periodicals archive ?
All were noted in the middle concha. Of the 155 CBs, 10 were seen only in the left, 35 were located only in the right, and in 55 were detected bilaterally.
CB is the most common variation of the nasal cavity and is most often found in the middle concha (20,22).
On coronal, sagittal, and axial CT sections, an oval expansile lesion of bone density with a diameter of 19.9 mm was found inside the right-sided aerated middle concha. This bone lesion filled the largest part of the concha bullosa cavity.
The exact reason of the middle concha pneumatization is still unknown.
The middle concha was cut and reflected along with its attached margins then middle meatus was opened so that its view became clear.
CONCHA BULLOSA: The middle concha bullosa is a result of pneumatization of the osseous plate due to ethmoidal extension.
pylori was not detected from mucosa of the middle concha specimens in 15 patients with concha bullosa in that study.
(3) It is approximately half the length of the middle concha and lies above its posterior half.
It is most commonly encountered in the middle concha. It is rarely found in the superior and inferior conchae.
The most common sites of origin for nasal polyposis are where the uncinate process, the middle concha, and the ethmoid bulla are in contact with each other.
Inspection of the nasal cavity revealed the presence of an abundant crust, a septal perforation with regular borders, and synechia between the middle concha and the septum.