Surgery is the standard therapy for a benign recurrent thyroid cyst. There are now alternative therapies for recurrent symptomatic thyroid cysts. Percutaneous Ethanol Injection (PEI), was first shown by the Italians in 1994 to be an effective alternative to surgery. This is an office procedure with no down time, compared to 3 to 4 day stay in hospital for surgery.
A review of the effectiveness of this treatment is available by following this link.
The video on the right shows the use of alcohol (ethanol) in treating cysts (collections of fluid) in the thyroid gland.