Left septal sinus cyst is actually a benign lesion, not a very serious disease, the formation of the left septal sinus cyst is mainly due to repeated inflammatory stimulation of the septal sinus mucosa hyperplasia, over time will form a cystic swelling. If the septal sinus cyst is relatively small, generally does not produce clinical discomfort, then there is no need to take special treatment, usually pay attention to care, avoid colds, avoid recurrence or cysts further growth can be. If the septal sinus cyst is particularly large, and clinical discomfort, such as local pressure or affect the vision, generally need to take timely treatment, for the septal sinus cyst is the main treatment method or surgical removal, after removal should also pay attention to care, to avoid the recurrence of cysts.