n. inflammation of the lining of the nose and paranasal sinuses. Rhinosinusitis is a common condition caused by allergies, infection, immune deficiencies, *mucociliary transport abnormalities, trauma, drugs, or tumours. Various classifications exist. The European Position Paper on Rhinosinusitis and Nasal Polyps 2012 defined acute rhinosinusitis as lasting up to 12 weeks and chronic rhinosinusitis as lasting 12 or more weeks. Subgroups of the latter include chronic rhinosinusitis with and without nasal polyps and allergic fungal rhinosinusitis. Treatment may require steroids (topical or systemic), antibiotics, immunotherapy, or *endoscopic sinus surgery. See rhinitis; sinusitis.
(osteomeatal complex) the part of the *paranasal sinuses where the frontal, maxillary, and anterior ethmoid sinuses communicate with the interior of the nose, which is affected in chronic *rhinosinusitis. *Endoscopic sinus surgery is often aimed at improving the function of this region.... ostiomeatal complex
n. inflammation of one or more of the mucous-membrane-lined air spaces in the facial bones that communicate with the nose (the paranasal sinuses). It is often associated with inflammation of the nasal lining (*rhinitis) and may be acute or chronic (see rhinosinusitis). Symptoms may include pain, purulent discharge from the nose, nasal obstruction, and disturbances of the sense of smell. Many cases are self-limiting. Others require treatment with antibiotics, decongestants, or steroid nose drops. A few cases need surgery, such as sinus washouts, *antrostomy, or functional *endoscopic sinus surgery (FESS).... sinusitis
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