What could a knot behind your left ear be that has been there for as long as you can remember but it doesn't hurt and could it be thyroid cancer?
A knot behind your left ear is probably a lymph gland. However,
thyroid tissue can infrequently be found in other areas of the body
outside of its normal placement. Early in embryonic development,
the thyroid gland forms near the brain and migrates downward to its
normal position in the lower neck. Sometimes "pieces" can be left
behind during migration that function like normal thyroid tissue.
Additionally, thyroid tissue can sometimes be found in the chest
cavity or other body parts when the migration process has not gone
If you are worried about your thyroid, the lump, or cancer, go
to your doctor for answers. Make sure you understand his/her
explanation fully and ask for it to be noted in your chart
including size, so if it appears to have grown you can go back and
remeasure and seek further evaluation.
Thyroid cancer is in the neck. The knot behind your ear is probably
part of your head. If you have had it awhile, and it hasn't grown,
it is probably normal. You would have a knot in your neck if it
were your thyroid.