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Staphylococcus aureus in sinus

When the opening to a sinus is blocked, the air within the sinus is absorbed and cannot be replaced because of the blockage. This results in a negative pressure within the sinus compared with the outside barometric pressure. Each sinus is lined with delicate membranes, which are furred with tiny hairs (cilia) and covered with sheets of warm mucus.

The sphenoid sinus is back of the eyes and the maxillary sinus is below the eyes, just behind the cheekbones. The cavernous sinus is not increased in size. The medial, superior, inferolateral, and carotid sulcus venous compartments are obliterated by the adenoma. One sinus is filled with a mixture of iliac crest bone and Bio-Oss (Geistlich Germany), and the second sinus is filled with calvarial skull bone and Bio-oss. The latter bone combination is appreciated clinically by the surgeons since it leads to a subjectively better implant stability.


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A visit to Northwestern Nasal + Sinus is your first step toward better nasal and sinus health. Our state-of-the-art center is dedicated to diagnosing and treating the nasal, sinus, allergy, snoring and obstructive breathing disorders that can make your everyday life more difficult. The falcine sinus is usually obliterated after birth, but may persist into adulthood and be involved in unusual draining patterns. Sinus is a term used by lay people to categorize a wide spectrum of conditions, the chief characteristics of which are nasal congestion and nasal discharge, either from the front of the nose or the back. Actual sinus disease is uncommon, but the nasal congestion of allergic and non-allergic rhinitis is very prevalent.

Each sinus is lined with a respiratory epithelium that produces mucus, which is transported out by ciliary action through the sinus ostium and into the nasal cavity. Normally, mucus does not accumulate in the sinuses, which remain sterile despite their adjacency to the bacterium-filled nasal passages. Once the uncinate process is removed, the natural opening of the maxillary sinus is examined. The opening is enlarged by removing some of the fibrous wall that the natural opening is located in. Cancer of the maxillary sinus is the most common type of paranasal sinus cancer.

The cavernous sinus is a small blood-filled space on either side of the base of the skull located behind the eyes. Each cavernous sinus contains the carotid artery, the nerves that go to the muscles that move the eye, and part of the nerve that provides sensation to the eye and face. The superior sagittal sinus is located in the attached margin of the falx cerebri. The inferior sagittal sinus is located in the free margin of the falx cerebri. Aneurysms most often involve the right aortic sinus (67-85% of patients, often associated with a supracristal ventricular septal defect), followed by the noncoronary sinus, while an aneurysm of the left sinus is rare. Under the strain of aortic pressure, the sinus gradually weakens and dilates, causing the formation of an aneurysm.

Control x-ray made after 6 months shows the presence of slight shading on the right side; whereas the left maxillary sinus is completely clear (Fig. The patient experiences some uneasiness on the right face from time to time, most often like paresthesia.

The maxillary sinus is entered through the upper jaw above one of the second molar teeth. A “window” is created to connect the maxillary sinus with the nose, thus improving drainage. Each sinus is lined with a membrane much like the membrane that line the inside of the nose. These membranes normally secrete a little watery mucus that keeps the sinuses and the inside of the nose from becoming too dry. Dermoid sinus is sometimes also confused with dermoid cyst (a teratoma ).

A poorly ventilated sinus is the result, and the hypoxia and mucus stasis produce ideal conditions for bacterial infection. In this method the opening of the sinus is widened by placing a balloon in the narrowed opening of the sinus. This is similar to angioplasty procedures for blood vessels. The sphenoid sinus is located deep in the head. Rarely sphenoid sinus infections can spread to the brain.

Each sinus is connected to the nasal passage by a thin duct that allows mucus to drain and air to flow. These passages can easily become blocked, however, making drainage difficult. When the sinus is to be divided it should be opened before the ligature is tied. On more than one occasion I have removed a tongue of tumor growing in the lumen of the sinus beyond the margin of the tumor. Another way to drain the frontal sinus is externally through an incision under the eyebrow. This is called a frontal sinus trephination, and is performed in the operating room.






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