Why is the Osteomeatal Complex important?
The harmony of mucociliary clearance and obstruction free osteomeatal complex is the key factor for ventilation and drainage of maxillary, frontal and anterior ethmoidal air cells. Presumably, these variations might induce osteal obstruction, preventing mucus drainage and predisposing to chronic rhinosinusitis.
What is Ostiomeatal pattern of sinusitis?
The frontal, maxillary, anterior, and middle ethmoidal sinuses all drain into the hiatus semilunaris of the middle meatus. Any mechanical block in this region causes inflammation of the above-mentioned sinuses. This is called the ostiomeatal pattern or middle meatus syndrome (see the image below).
Where is the Osteomeatal complex?
The maxillary sinuses are located beneath the cheekbones, above the upper teeth. The maxillary sinus drains into what is called the osteomeatal complex, which is an opening on the outer wall of the nasal cavity.
What are Haller 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.
Is mucosal thickening serious?
We conclude that mucosal thickening of up to 3 mm is common and lacks clinical significance in asymptomatic patients. An ancillary finding is that 1- to 2-mm areas of mucosal thickening in the ethmoidal sinuses occur in 63% of asymptomatic patients.
How do you clear mucosal thickening?
Treatment
- Nasal corticosteroids.
- Saline nasal irrigation, with nasal sprays or solutions, reduces drainage and rinses away irritants and allergies.
- Oral or injected corticosteroids.
- Allergy medications.
- Aspirin desensitization treatment, if you have reactions to aspirin that cause sinusitis and nasal polyps.
What is Antrostomy maxillary?
WHAT IS A MAXILLARY ANTROSTOMY? The maxillary sinuses are located under your cheekbones. When they become blocked and no longer drain properly, an infection can develop. Often, the sinus opening itself becomes blocked, too. The procedure to clear the sinus opening is called a maxillary antrostomy.
What is bilateral Antrostomy?
Maxillary antrostomy is a surgical procedure to enlarge the opening (ostium) of the maxillary sinus. This allows for further surgical intervention within the maxillary sinus cavity as well as improved sinus drainage.
Are there any diseases associated with the ostiomeatal complex?
There is a wide range of anatomical variants that affect the many structures that compose the ostiomeatal complex and are not pathological in themselves but their presence can result in disease. See main article, ostiomeatal narrowing due to nasal anatomical variation , for the complete list.
Which is the correct spelling for the ostiomeatal complex?
The ostiomeatal complex (OMC) or ostiomeatal unit (OMU), sometimes less correctly spelled as osteomeatal complex, is a common channel that links the frontal sinus, anterior ethmoid air cells and the maxillary sinus to the middle meatus, allowing airflow and mucociliary drainage.
Where is the ostiomeatal complex located in the nose?
The ostiomeatal complex (OMC) is the collection of structures that aids in mucus drainage and airflow between the maxillary sinus, the anterior ethmoid air cells, and the frontal sinus. It is located on the lateral wall of the nasal cavity and has several well defined borders.
Is the agger nasi part of the ostiomeatal complex?
The agger nasi and atrium of the middle meatus also have an anterosuperior, and anterior (respectively) relations to the complex. Superiorly, the ostiomeatal complex (OMC) is limited by the basal lamella. The basal lamella is a thin piece of lamina papyracea that attaches the middle turbinate (concha) to the lateral wall of the nasal cavity.