In conclusion, our findings indicate that because of low sensitivity of sonography, differentiation between
Graves’
disease and Hashimoto’s
thyroiditis is not possible but due to high specificity it can differentiate normal thyroid from Graves’ disease or Hashimoto’s thyroiditis. It is suggested that if thyroiditis or Graves’ disease is defined by sonography, it should be further confirmed by clinical and laboratory with laboratory data. "
https://www.ncbi.nlm.nih.