Re: Cyst on thyroid, very scared, question about thyroid cancer
A "cyst" would be fluid, and a nodule would be solid, I don't know what a "complex cyst" term means exactly.
A "cyst" is very unlikely to be cancer, and usually they can draw out some fluid and it disappears. A nodule is only slightly more likely to be cancer, depending upon it's size, texture, and your fna.
When you say "large" what do you mean by that in cm? If it's very large, over 3cm, and doesn't go away if it's drained (if it's a "cyst" as opposed to a nodule), it might have to be removed if it keeps growing, even if it's benign.
Thyroid cancer is rare, and when I had it, 6 years ago, my blood work was perfect, and my only symptom was the 2.5 cm lump I found on my neck. It's also curable and relatively easily treated in most cases. There is no way to tell thyroid cancer from blood work.
A needle biopsy is the way to go (fna) but sometimes they raise more questions than answers. The only way to really know that everything is okay, sometimes is surgery, but you aren't at that point yet----if this is a "cyst" it might just disappear!