Complex structure with internal blood flow 1.5 cm and 3 hypoechoic nodules over 1 cm in rt lobe of thyroid. biopsy? can this cause symptoms?

Should biopsy nodule: By age 60, about one-half of all people have a thyroid nodule, found either through examination or with imaging. Over 90% of such nodules are benign. Hypoechoic noodules are usually cysts. The complex nodule over one cm. With blood flow should be biopsied. This can be performed by neeedle or core bx. Most nodules are asymptomatic.