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What causes one lobe to enlarge more than the other

Rt lobe volume 9.2cc
Lt lobe 17.4cc
Isthmus 7mm
Heterogeneous hypo echoic mass 2.9cm x 2.2cm x 2.2cm with central & peripheral flow

Mass has grown steadily since last year.

What can cause one lobe to increase in size so much more than the other?
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1013194 tn?1296459481
Oh sorry, if your bloods are like this.0.09! FT3&4 are top of range. maybe they wont increase if your doc is like mine.My bloods are the same but still have hypo symptoms. But its a hard fight to get more done if the doc just goes by blood tests..:(
Helpful - 0
1013194 tn?1296459481
My left lobe is the one that has enlarged fom Hashi and a goiter, not my right, no idea why that is so cant answer that. But mine has gone down in size since starting on meds. Maybe You do need a little bump in meds again? Have you had a scan and biopsy of the mass? did they pick up on hashi this way? And i have heard of ppl having hashi with it not showing in the blood, some are picked up with the biopsy, others by looking at the gland with a scan...
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Avatar universal
Sorry to hear about your Hashimoto's.  One way doc's treat goitres is with therapeutic doses of replacement hormone.  Can one have Hashimoto w/ no antibodies???  I've only dealt with CA.  Regarding goitres the conventional wisdom is that if you're not on a high enough dose of Thy Hor then your thyroid can goitre because it is working harder to produce more hormone.  (Especially if ur having hypo symptoms.)
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Avatar universal
Yes the mass is centre-left. But I am HYPO and the mass is fairly new  and not within the gland itself - I had the goitre before the mass.  I have been taking synthroid for 10 yrs but the gland is steadily enlarging.  I was diagnosed with Hashimoto, but no antibodies.  My meds were increased to 150 from 100 mcg 2 months ago.  I still have hypo symptoms but my TSH is now down to 0.09! FT3&4 are top of range.  
Helpful - 0
929504 tn?1332585934
I am gonna assume that the mass is on the Left lobe????

Thyroid enlargement can be caused by a couple of things: A Nodule that is within the thyroid gland, or a condition such as: hyperthyroidism or Grave's Disease.

In your case, it seems as if the nodule is the issue. Were you given a diagnosis??
AS far as the steady growth,of the nodule, that is very common and they can grown very large and cause problems.  
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