What are agger nasi cells?
Agger nasi air cells are the most anterior ethmoidal air cells lying anterolateral and inferior to the frontal recess and anterior and above the attachment of the middle turbinate. They are located within the lacrimal bone and therefore have as lateral relations the orbit, the lacrimal sac and the nasolacrimal duct.
What is bilateral agger nasi?
The agger nasi (from Latin: agger meaning “mound or heap”) is a small ridge on the lateral side of the nasal cavity. It is located midway at the anterior edge of the middle nasal concha, directly above the atrium of the middle meatus. It is also called the nasoturbinal concha and the nasal ridge.
What are Heller cells?
Haller’s cells are defined as air cells situated beneath the ethmoid bulla along the roof of the maxillary sinus and the most inferior portion of the lamina papyracea, including air cells located within the ethmoid infundibulum. Haller’s cells are thought to arise in individuals with pneumatization of the lateral crus.
What is Type 3 frontal cell?
Type III is a large cell pneumatizing from the frontal recess into the frontal sinus. Type IV is a cell totally isolated within the frontal sinus. Frontal cells have been reported to occur in 20–41% of paranasal sinuses [3.
Where is Agger Nasi?
nasal cavity
The agger nasi (from agger meaning “mound or heap”) is a small ridge on the lateral side of the nasal cavity. It is located midway at the anterior edge of the middle nasal concha, directly above the atrium of the middle meatus. It is formed by a mucous membrane that is covering the ethmoidal crest of the maxilla.
What is Kuhn cell?
Kuhn classification is an anatomical classification for the subtypes of frontal cells: type 2 (~19%): two or more air cells above the agger nasi cell. type 3 (~7%): a single large cell above the agger nasi cell that extends into the frontal sinus. type 4 (rare): cells are entirely contained within the frontal sinus.
What is basal lamella?
The basal lamella, also known as basal lamella of the middle turbinate, is an osseous lamella that separates the anterior from the posterior ethmoid sinuses 1.
