Where are the Ostiomeatal units?

nasal cavity
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.

Who first described the Osteomeatal complex?

7. The ostiomeatal complex is differently defined by several authors.  Naumann H ..he was the first to develop this anatomical unit and coined the term term osteometal complex. According to him it consists of semilunar hiatus and middle meatus.

What is Mucoperiosteal thickening?

Soft-tissue disease seen within the paranasal sinuses on CT scans is often described as mucosal thickening or mucoperiosteal thickening, with little attention to its exact nature.

What is Osteomeatal?

Osteomeatal complex is a functional entity of the anterior ethmoid complex that represents the final common pathway for drainage and ventilation of the frontal, maxillary, and anterior ethmoid cells [10].

What is the right Ostiomeatal unit?

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.

What is Osteomeatal complex?

What is a Haller cell?

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.

How much mucosal thickening is normal?

An ancillary finding is that 1- to 2-mm areas of mucosal thickening in the ethmoidal sinuses occur in 63% of asymptomatic patients. This minimal mucosal thickening in the ethmoidal sinuses is thought to be a normal variant, possibly a function of the physiologic nasal cycle.

What is chronic sinus inflammation?

Chronic sinusitis occurs when the spaces inside your nose and head (sinuses) are swollen and inflamed for three months or longer, despite treatment. This common condition interferes with the way mucus normally drains, and makes your nose stuffy.