Right arachnoid cyst is not a very serious problem, arachnoid cysts are often found in the clinic, especially now with the increasing awareness of the checkup, many patients will be found to have arachnoid cysts in the checkup, in fact, arachnoid cysts is a bubble of cerebrospinal fluid, by the outside of a layer of envelope strictly wrapped, it is a kind of benign lesions, and can not be called a tumor, the impact of the brain is basically only occupying effect, with the prolongation of time will gradually grow, gradually compressing the surrounding nervous tissue to form a series of clinical symptoms. It is a benign lesion and cannot be called a tumor. It basically only has an occupying effect on the brain, and will gradually grow with the extension of time, gradually compressing the surrounding nerve tissues to form a series of clinical symptoms. If there is no clinical manifestation, no special treatment is needed. If there are clinical manifestations that seriously affect the life, surgery can be taken to treat the tumor, and nowadays the surgery technology is very mature, as long as the surgery will seldom form the tendency of recurrence in the later stage, so it is not a very serious disease that affects the daily life, and it is enough to actively carry out the corresponding treatment.