Patient: I get headaches easily when I have a cold and when I am tired. I would like to ask if such a disease has any effect on the child’s vision, since the laboratory tests and maxillary sinus cysts are “absent”. The child is only 12 years old. I heard that the cysts are very large. If I don’t operate for a while, can it cause a lesion? I’ve heard that they are prone to recurrence. Is that true? R.J. Shih: Generally speaking, small maxillary sinus cysts do not need to be treated and will not affect vision. However, if the cyst is so large that it compresses and enters the orbit, it can affect vision. It is not that they are prone to recurrence, but that there is a possibility of recurrence. The recurrence rate can be minimized if the cyst is removed very completely.