Help with some questions

[Littleninja]

Hello everyone!!!  I was diagnosed with Goiter about 5 years ago.  I had never been put on any meds due to my blood work always being normal.  I just did my routine ultrasounds which always come back as "no changes".  This time they did find a complex cyst on the right side and solid nodule on the left side of the thyroid along with multiple nodules and the thyroid has become quite enlarged.  Went to see an Endocrinologist and was put on Synthroid.  50mcg.  I was wondering, I have only been taking it two days and today i have a horrible case of the "jitters"  is this normal?  How long does this last.  What are some other side effects that may creep up on me?  Also I had a ultrasound guided FNA done on Friday and they said it will be about two weeks for results.  I hear chances of it being cancer are very slim but i'm still very scared.  

thanks to anyone that can answer some of my questions.

[Littleninja]

Thank you so much for your reply.  My thyroid blood work came back perfect.  Shoudl I ask my Endo to take my off the synthroid?  She said she was using it to try and shrink the Thyroid nodules. She also stated that if my FNA results came back all clear that I should stay on the synthoid and then have another ultra sound to check for any changes, if there are no changes she would reccomend removal of the thyroid.  

thanks again!  

[Mark Lupo, M.D.]

Chances of a nodule being cancer are about 10%.  Synthroid is not always needed for goiter - usually only needed if TSH is high (or borderline high).  We used to try to "suppress" goiters/nodules with synthroid routinely, but recent guidelines suggest against that unless there is a slightly high TSH (I use >3) and/or positive antibodies.  Certainly avoid synthroid-type meds if TSH is already low-ish (1.0 or less).  It can make you a little stimulated -- like taking too much caffeine,  usually this gets better in 10-14 days.