We describe the case of a 29-year-old woman from the Chernobyl area, who moved to the Czech Republic 10 years after the Chernobyl nuclear disaster. She was evaluated for a large goiter. Fine-needle aspiration cytology indicated a diagnosis of a typical degenerated Hurthle cell adenoma. She underwent total thyroidectomy but a continual loud murmur was found 1 month after surgery. An arteriovenous (AV) fistula between the right thyrocervical trunk and the right jugular vein was proven angiographically. This fistula was successfully closed by artificial embolization performed by detachable Gianturco-Anderson-Wallace (GAW) coil. This is the first description of using such a procedure in order to close an AV fistula after thyroidectomy.