Heterogeneous echostructure of your thyroid isn't normal, but it isn't anything to write home about, either. It means you likely suffer from Hashimoto's, the autoimmune form of hypothyroidism. Have you had a thyroid blood panel done--TSH, free T4, free T3, and thyroid antibodies (TPO and Tg)? You'll probably find elevated thyroid antibody levels, elevated TSH, and decreased levels of free T3 and free T4.
Some groups of cells are more resistant, so they can survive the inflammation; some right next to them may die, the result is cheese-like structure.
"Extended periods of inflammation can lead to scarring and fibrosis and sometimes the formation of a round, hard nodule that is very difficult to distinguish from a thyroid tumor.”
“All scar tissue wants to get smaller. This is called the process of “contracture”. For example, if you get a 6-inch cut on your leg today, a scar will form. If you measure that scar next year, lets say, it may only be 5 ½ inches long. Well, scar tissue in the thyroid gland also wants to get smaller, but the thyroid gland sort of wraps around the windpipe and the esophagus to some degree. When this scar tissue undergoes contracture it can put pressure on those structures and produce what are called “compression symptoms”, that is, difficulty in breathing or swallowing. Some patients have actually choked on their food”
is this normal? why does it look like that?
That means the tissue structure is not uniform, the magnified image of the tissue looks like Swiss cheese