![]() ![]() A CT scan can be used to confirm a diagnosis. Silent sinus syndrome is first suspected based on symptoms. Risk factors for silent sinus syndrome include any anatomic condition causing obstruction of the maxillary ostium, such as ipsilateral nasal septum deviation,ipsilateral laterally deviated middle turbinate, and narrowed infundibulum. This can create negative pressure in the sinus, as secretions are reabsorbed. The connection to the nose may be blocked. Bacteria in the maxillary sinus may be involved. The cause of silent sinus syndrome is not well understood. When the maxillary sinus is involved, the inferior oblique muscle may be damaged. ![]() It may also affect the frontal sinus or the ethmoid sinus. Silent sinus syndrome most often affects the maxillary sinus, usually with a collapse of the orbital floor. It may also cause headaches, and a feeling of fullness in the nose. Silent sinus syndrome can cause facial asymmetry (usually without pain), and vision problems (such as diplopia and enophthalmos). It is slightly more common in middle age. Treatment is surgical involving making an outlet for mucous drainage from the obstructed sinus, and, in some cases, paired with reconstruction of the orbital floor. Diagnosis is suspected based on symptoms, and can be confirmed using a CT scan. It can cause painless facial asymmetry, diplopia and enophthalmos. Silent sinus syndrome is a spontaneous, asymptomatic collapse of an air sinus (usually the maxillary sinus and orbital floor) associated with negative sinus pressures. Sinus atelectasis, congenital sinus hypoplasia Facial asymmetry, vision problems, headache
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