Ultrasound found dominant mass?

[selenite54]

I'm 33, female, no children, I've had a physical exam as recent as 6 months ago, thyroid count normal, nothing abnormal physically speaking.  I went in for my womens wellness exam, doc said thyroid was prominent.  Did an ultrasound yesterday, got the report today.  It says I have a dominant mass involving most fo the left lob of the thyroid measuring up to 4.7 x 3.6 x 2.2 cm.  There is a 8 mm hypoechoic lesion in the right lobe, but is of doubtful significance.  Isthumus is 4 mm.  Right lobe measures 4.2 x 1.3 x 1.5 cm and left lobe measures greater than 5 x 3.2 x 2.4 cm.

The doc didn't explain anything further other than the obvious: dominant mass, need a biopsy.  What is going on here??  I feel fine, no problems swallowing or breathing, no pain, nothing protruding out of my neck.  There is a slight soft spot on that left side I can feel, but it's not noticable.  I have no family history of this condition.  What does all of this mean?  

[Mark Lupo, M.D.]

You should have a biopsy of this and work with an endocrinologist or ENT with expertise in thyroid preferably one who does his/her own ultrasound in the office to do the FNA and discuss options of observation vs surgery depending on the results.

[tguillen70]

When you have thyroid cancer your labs are normal. Your labs are only abnormal when you have thyroid disease. If biopsy shows cancer be sure to have entire thyroid removed. I had to have a second surgery because my endocrinologist told me to just do a partial thyroidectomy. If its cancer take the entir thing out. It's not fun to get cut across the neck twice.