A lamellar hypoechoic area of the thyroid is described in a thyroid ultrasound report. Ultrasound suggestive of lamellar hypoechogenicity is commonly seen in thyroiditis, especially in subacute thyroiditis and Hashimoto’s thyroiditis, suggesting a state of inhomogeneous inflammatory destruction within the thyroid gland. In addition, laboratory tests as well as symptoms need to be combined to determine the specific cause. Thyroid ultrasound is a common test nowadays, which is easy to perform, non-invasive and economical. The thyroid gland is relatively superficially located and many lesions are easily detected by ultrasound. Thyroid ultrasound is a common clinical diagnostic method. Echo is a unique description of the ultrasound report, and the description of the echo level in the ultrasound report is observed according to ultrasound principles. If the echo is uniform, the thyroid parenchyma is normal. If the echo is not uniform, it suggests a lesion in the thyroid parenchyma, commonly seen in hyperthyroidism and Hashimoto’s thyroiditis, etc. The normal thyroid gland shows moderate echogenicity and uniform echogenicity as fine light spots inside the thyroid gland.