Coronal CT of sinuses (normal ). There is normally a sharp, distinct border ... The maxillary sinus ostium is completely obstructed by grey area representing swollen tissue.

The maxillary sinus drains into the nose through a hole called the ostia.When the ostia becomes clogged, sinusitis can occur. The ostia of the maxillary sinus often clog because the ostia are ...

Improved voice quality and patient satisfaction with their voice were seen following functional endoscopic sinus surgery (FESS) for nasal polyposis among a cohort of 46 patients who underwent the ...

Sinusitis occurs as a result of obstruction of the osteomeatal unit, which is located in the vicinity of the maxillary sinus ostium (Fig. 1). Because of obstruction, mucus accumulates inside the ...