Hi and welcome to HCM,thank you for your query.
It is not good sign and it can mean that there is malignant process on thyroid
. it cant be determined is it primary or secondary malignancy so further tests are required such as scintigraphy
. Fortunately most thyrorid tumors are relatively easily treated and there is good prognosis for it. It can be surgically removed or rasdioactive iodine
can be used. But as i said,the exact diagnosis must be established first.
Wish you good health. Regards.