They remain connected to the nasal cavity via narrow ostia with a lumen diameter of 1 to 3 mm. The sinuses are lined with mucoperiosteum, which is thinner and less richly supplied with blood ...

Blockage of the tear duct Septal hematoma (blood collecting in the nasal cavity) Septal abscess (buildup of pus in the nose) Infection in the brain tissue Facial deformity Contact a healthcare ...

But in some cases, it may get worse. Rarely if a sinus infection affects a sinus cavity close to the brain, it can spread to the space around the brain. An infection can also pass into the eye ...

Several studies have investigated the anatomy of the olfactory fossa using ... procedure that uses an endoscope to access the nasal cavity and sinuses to treat various conditions.

that includes obstruction of the nasal sinus passages, and that can also be from irritants. Then I have people come in who work in old buildings. The old ventilation systems may be full of dust ...

Nasal irrigation is the cleansing of the nasal cavity with sterile salt water to flush out excess mucus or debris from the sinuses and nose, such as with the use of a neti pot. "People are more ...