In addition, since isometric exercises are done in a static position, they won't help improve speed or athletic performance. They can be useful, however, in enhancing stabilization â maintaining the position of the affected area â since muscles often contract isometrically to aid in stabilization.
Etiology. Most (85-95%) substernal thyroid masses represent benign goiter. Historically, goiters have generally occurred because of iodine deficiency, although this is now observed primarily in developing nations.
Diffuse heterogeneous echotexture is noted. The thyroid gland is mildly hypervascular on color Doppler images. There is a 1.2 cm isoechoic solid nodule in the right mid thyroid. It is not identified with certainty on previous ultrasound.Three smaller 5 mm to 9mm solid/hypoechoic solid/cystic nodules are noted in the right upper pole and mid thyroid.mpression: Moderately enlarged thyroid gland. Diffuse heterogenous echotexture. Thyroid gland is relatively stable in size. Several cysts/nodules in right and left thyroid lobe compatible with multinodular goiter.