My understanding is that the liquid from the cyst is sucked out with a hollow needle and then 96% pure alchol is injected in it, left for 20 minutes and then taken out. This is done instead of a thyroid operation. Almost 90% success rate, treatment lasts about 1 hour and no sick leave needed. The almost pure alcohol sort of burns the cells inside the cyst. Only ''downside'' is that those doing traditional thyroid operations as their business and their anesthesist won't be needed for this. Apparently this method has existed since 1980s but I have only once read about it, written by a patient who had this successfully done in Finland by a good radiologist, eg. no need to take off half the thyroid and take hypomedication for rest of one's life.
Any additional info and/or views on this would be much appreciated.