paranasal sinus

Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

paranasal sinus

any one of the air cavities in various bones around the nose, such as the frontal sinus in the frontal bone lying deep to the medial part of the superciliary ridge and the maxillary sinus within the maxilla between the orbit, the nasal cavity, and the upper teeth. See also accessory nasal sinuses. Compare confluence of the sinuses, occipital sinus.
enlarge picture
Paranasal sinuses
Enlarge picture

paranasal sinus

An air cavity in a facial bone, either the frontal, maxillary, sphenoid, or ethmoid bones; most paranasal sinuses occur in pairs. The paranasal sinuses are lined with ciliated epithelium that secretes mucus. The sinuses open into the lateral walls of the nasal cavities via small holes. Healthy paranasal sinuses are radiolucent. Synonym: accessory nasal sinus; air sinus; See: illustration
See also: sinus

Patient discussion about paranasal sinus

Q. My 21 year son has chronic sinus issues, I think, due to many high school sports injuries. Help! His ENT has recommended a "nose job" but our insurance will not cover it. Do you know of any holostic, nutritional or homeopathic solutions to keep this under control? When he gets a headache, it shuts him down and normally goes into a migraine.

A. One of the best, most inexpensive, ways to prevent, treat, and generally care for any sinus related problem is with a saline (salt water) sinus rinse. The one I use is called "Neil Med" and can be purchased at Walgreen's for about $15. It has a plastic bottle with pre-measured, pre-packaged salt that is should be mixed with cooled off sterilized (boiled) water. If I get an infection, using 2 or 3 packets to concentrate the solution gives the lavage a bacteriostatic (stuns/partially kills bacteria), not bacteriocidal (kills bacteria) quality. I do not own Neil Med although I wish I did!! The lavage method also washes out any dust, old mucous, you name it. It should be used prior to the use of any nasal steroid like Flonase if treating allergic rhinitis. Good luck!!

Q. I have been having chronic pain in sinus area and behind my eyes, been to ENT who states it is not infection? I wake up with the pain and go to sleep in severe pain. Its all day and all night. Dr insists that its migraine related and allergy related. I have chronic postnasal drainage. It started 4 months ago when I moved into our new house. The pain makes me extremely fatigue and dizzy at times. I have been referred to the eye doctor, a headache specialist and an allergy specialist. Just recently I have had a CT scan and an MRI, as well as xrays of my sinus. Nothing other than a deviated septum and possible allergies from an ENT has been diagnosed. In the mean time I am waiting for the days to come when I can get into see these specialist. Anyone out there have any of the same symptoms?? Need help here. Soooooo sick of the pain.

A. i have chronic sinusitis and can really relate to what you describe. learned to live with the pain...but still, i use various ways to reduce inflammation in my sinuses, i heat the place up before going to sleep, try to avoid eating or drinking cold stuff.
another thing i do is i heat water (80c) then add a special oil i bought in a chinese medicine store , about 5 drops, and inhale the fumes. nettle tea can do wonders too.

Q. sinus infection and Polups and I can't breath through my nose. What can I do?

A. I have used the expresso machine for the steam only and run that through a glass with some vics in it. Helped but the polups are so large now its hard to get any thing through.

More discussions about paranasal sinus
References in periodicals archive ?
By definition a completely opacified, nonenhancing and mucus-filled expanded sinus, a mucocele is the most common expansile mass of a paranasal sinus (Figure 3).
A dentigerous cyst that involves a paranasal sinus usually is related to a maxillary canine, with secondary extension into the antrum.
The spectrum of inflammatory conditions affecting the paranasal sinuses, collectively represent the most frequently encountered paranasal sinus diseases in both the adult and paediatric patients.
Mucoceles are expansile mucosa-lined sinus cysts that form secondary to an obstructed paranasal sinus ostium.
By Kern's (8) definition, acute sinusitis is an infection in a paranasal sinus lasting less than 3 weeks, whereas subacute sinusitis is an infection lasting from 3 weeks to 3 months.
7) The miniseries CT scan is an alternative to plain films in the evaluation of paranasal sinus disease.
The association between a concha bullosa and paranasal sinus disease is debatable.
Paranasal sinus bony anatomic variations and mucosal abnormalities: CT analysis for endoscopic sinus surgery.
1-8) When paranasal sinus involvement has occurred, the most common sites of origin have been the frontal sinus and the ethmoid sinus.
The characteristics of this very rare case of polyps in bilateral conchae bullosa support the hypotheses that a concha bullosa is actually a pneumatized structure of the paranasal sinus system, and that it is connected to the frontal recess by an ostium.
The tumors were located in the nasal cavity in 7 patients and in a paranasal sinus in the other 3.