Maxillary sinus retention cysts (MRCs) are typically asymptomatic and require no treatment. An early 30s man presented with a decade-long history of severe left-sided chronic facial pain (CFP).

Thickening involves most of maxillary sinuses (M), but is more prominent on right. The maxillary sinus ostium is completely obstructed by grey area representing swollen tissue.

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 ...

Cone-beam computed tomography (CBCT) scans were evaluated to assess maxillary sinus characteristics, including membrane thickening, sinus occupancy and ostium patency. The CBCT scans taken 6 months ...

Maxillary sinus cancer is a rare form of cancer that develops near the nose. It can be very aggressive and symptoms may include facial lumps and pain or a decreased ability to smell.

Accessory maxillary ostium (AMO) is a relatively common anatomical variation observed in the maxillary sinus, and its prevalence has been reported to be between 18% and 30% of the general population ...

The primary maxillary ostium (PMO) is a natural opening between the floor of the orbit and the medial wall of the maxillary sinus [1, 2]. The PMO contributes to drainage from the sinuses towards the ...

Nine patients were lost to follow-up, but among the remaining study population, most patients had more-than-4 mm–enlarged maxillary ostium and sphenoid sinus.

Figure 3 Coronal section through both maxillary sinus ostia (circles in figure 3). Both sinus ostia are full of soft tissue and appear to be widened. The posterior portions of the sinuses are almost ...

Background: The relationship between maxillary sinus pneumatization and respiratory-induced fluid mechanics remains unclear. The purpose of this study was to simulate and measure the ...

Intersect ENT EXPAND Post-Market Study Evaluating Longer-Term Outcomes of PROPEL® Contour Sinus Implant in the Frontal Sinus Ostia Following In-Office Balloon Sinus Dilation EXPAND is a prospective, ...