My Sister In Law found out only when they went in to remove the one side in a partial and found out the nodule was so huge it passed thru her isthmus and took up the spot where the other half should have been so she ended up on thyroid meds since her partial became a TT but luckily it was not cancer.
C~
I guess I do...I just found this out a week ago-I'm scheduled to see an endo in a few weeks-I'm 37
It has been known for people to be born with no thyroid.
Do you have any function?