Thyroid and parathyroid glands (English)

Top image: Anterior view of the thyroid gland with thyroid cartilage and the cervical part of the trachea exposed. The butterfly-shaped thyroid gland consists of left and right conical shaped lobes which are connected by a central isthmus. A third pyramidal lobe may be present occasionally. The thyroid gland is located anterior to the trachea and inferior to the thyroid cartilage.Bottom image: Posterior view of the thyroid gland with the four parathyroid glands exposed. Two pairs of lentil-shaped parathyroid glands are positioned on the back of each lobe of the thyroid gland. According to their location, they are called superior and inferior parathyroid glands.