Antero posterior depth 2 2 cm.
Roof of sphenoid sinus.
Sphenoid sinuses are just behind the skull above the nasopharynx and just below the pituitary gland.
Sphenoid sinus infections are caused by or exacerbated by the same contributing factors as most other common types of sinus infection.
The sphenoid sinus ostium is often at the same vertical level as the roof of the maxillary sinus a good landmark for the relative height of entry into the sphenoid sinus.
The sphenoid sinuses are located in the sphenoid bone near the optic nerve and the pituitary gland on the side of the skull.
It is difficult to identify diseases in this part because of its location.
The sphenoid sinuses vary in size and shape and owing to the lateral displacement of the intervening septum which may insert on the carotid canal they are rarely symmetrical.
If present the superior turbinate is the best landmark for the sphenoid ostium and is often just posterior medial to the superior turbinate.
The infection is centered in the sphenoid sinus.
The sphenoid sinuses are paired spaces formed within the body of the sphenoid bone communicating with the roof of the nasal cavity via the sphenoethmoidal recess in its anterior wall figure 1.
The two sinuses are separated by a septum which may or may not be in the midline.
The sphenoid sinus is one of the four paired paranasal sinuses that is contained within the body of the sphenoid bone.
It usually lies anteroinferior to the sella.
The apertures are high on the anterior walls of the sphenoid sinuses.
The sphenoid sinuses are paired spaces formed within the body of the sphenoid bone communicating with the roof of the nasal cavity via the sphenoethmoidal recess in its anterior wall.
It further results in inflammation of the inner lining of the sinus leading to accumulation of mucus.
Sphenoid sinusitis or sphenoiditis is the infection of the sphenoid sinus caused by bacteria or virus.
The following are their average measurements.
The two sinuses are separated by a septum which may or may not be in the midline.
The term sphenoid refers to the sinuses located behind the eyes so sphenoid sinus infection is simply a way of describing which of the sinuses have been infected.
Transverse breadth 2 cm.
The sphenoid sinus ostium is often at the same vertical level as the roof of the maxillary sinus a good landmark for the relative height of entry into the sphenoid sinus.
In front of the sphenoid sinuses are the ethmoid sinuses.
The sphenoid sinuses are not more susceptible to sinus infection than the other sinus cavities yet they are deeper in many places and as such are somewhat likelier to harbor lingering infection.
Vertical height 2 2 cm.
They cannot be palpated during an extraoral examination.
Aside from bacteria fungus allergens and viruses can contribute to sphenoidal.
The main cause of sphenoid sinusitis is a bacterial infection.
