Tendon sheath cysts are benign swellings that are mostly caused by strain. Tendon sheath cysts that are larger and affect the movement of the joint can be treated surgically. However, they are prone to recurrence after surgical treatment. The cost of surgery for a tendon sheath cyst is about $600, and the price will vary depending on the level of the hospital. Some surgical supplies, anesthetic and local anesthesia are also needed, and the total cost is about $1000. Generally speaking, the surgery for tendon sheath cyst is relatively small and can be done on an outpatient basis. The stitches can be removed in two weeks and it will heal without sequelae, just pay attention to preventing infection of the incision. Try not to touch the wet and cold environment, and try to rest to prevent recurrence.