Sonogram of a normal right lobe of the thyroid gland. Video courtesy of David L Francis, MD. The thyroid is a highly vascular, brownish-red gland located anteriorly in the lower neck, extending from the level of the fifth cervical vertebra down to the first thoracic.he video below depicts an ultrasonographic view of the right lobe of the thyroid gland. Thyroid gland, anterior and lateral views. Each lobe is 50-60 mm long, with the superior poles diverging laterally at the level of the oblique lines on the laminae of the thyroid cartilage.