"ostio" is the root word meaning "passage".
The medical term you are referring to has to do with passages in the nose, not to bones.
What you want is "ostiomeatal". Perhaps the CT transcribers are not aware of the fact that there are two similar root words and that they need to use the one that means "passage". Perhaps they are getting interference from seeing the word "osteoporosis" in the popular press lately. In that case, it really is "bones" that is the intended meaning, and in that case "osteo" is correct.
Confusing? Yes -- but not an insurmountable confusion.
Hope this helps!
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One question, meatus also means opening. I thought that osteomeatal meant an opening in bone.
I went through so many medical texts in the hospital library and found it more confusing when even in ENT texts the words were interchangeable....
What do you think?
The term ostiomeatal refers to the connection between the meatus in the nasal cavity to the ostium of the paranasal sinus.
P.S. I am a radiologist.
Between the turbinates in the nose are little passages, each of which they call a "meatus" so you have the middle meatus which they talk about a lot because the sinuses drain into there. But the little hole (doorways) where the mucus (and whatever else) comes out of the sinuses are called ostia. Ostium is singular. That mean "opening."
Some people say, that's redundant! Well, I think of it like a hallway between walls and at the ends or near the ends there are doors that go into rooms (the sinuses). That really untechnical, but that helps me understand how there can be "meatus" and "ostia" in the same area.
The combination of the passages between the nasal turbinates and the openings from the sinuses is called the "ostiomeatal complex." Believe it or not, the scope is small enough so they can look up in there and take pictures. They can see if there is blockage from such things as polyps or just plain swelling of the turbinates. Of course, they also notice if the nasal septum is crooked and causing problems.
Depending on what is causing the openings from the sinuses to be blocked, they will treat accordingly. If there are polyps and they aren't too bad, they try medication to reduce them. If that works, fine. If not, then they can do surgery to remove the polyps. The usually use lasers these days. Once the polyps are removed, though, they have to make sure the polyps don't come back. Some people are more susceptible to developing polyps than others. If the ostia are too small, they can do what they call an "ostiomeatal expansion" to increase the size so that the mucus can get out. There is normally drainage from the sinuses, and when that gets blocked for any reason, you have problems.