They are small, pea-sized glands in your neck or upper chest near the thyroid gland.

Parathyroid cancers are very rare. The parathyroid gland produces and secretes parathyroid hormone in response to a low blood calcium, which plays a key role in regulating the amount of calcium in the blood and within the bones. The parathyroid gland appears in the adult as a pair of inferior and a pair of superior "bumps" on the beside the (dorsal) thyroid (hence the name, "para"). Anatomy If they secrete extra PTH, you have hyperparathyroidism, and your blood calcium rises. Parathyroid glands are small endocrine glands in the neck of humans and other tetrapods.Humans usually have four parathyroid glands, located on the back of the thyroid gland in variable locations. Very rarely, the cause is cancer.

The superior parathyroid glands are most commonly found about the middle third of the thyroid lobe, at the level of the cricothyroid junction, and near the point where the recurrent laryngeal nerve passes beneath the inferior pharyngeal constrictor to enter the larynx . In many cases, a benign tumor on a parathyroid gland makes it overactive. A parathyroid tumor is a growth inside a parathyroid gland.

DISEASES OF THE PARATHYROID GLAND - DISEASES OF THE PARATHYROID GLAND DR MRS R.T. IKEM Introduction The four parathyroid glands are located posterior to the thyroid gland weight an averg 40mg each. About 1 in 100 people (1 in 50 women over 50) will develop a parathyroid gland tumor during their lifetime, causing a disease called "hyperparathyroidism". There are four parathyroid glands, which are usually located behind the thyroid gland and, in rare cases, within the thyroid gland or in the chest. The embryonic origin of this gland is from the endoderm of the third and fourth pharyngeal pouches, and could also have ectoderm and neural crest contributions. Most parathyroid tumors are not cancer (benign). THE THYROID GLAND Anatomical Structure Gross Anatomy Located in neck lobes isthmus Relations Larynx Trachea Recurrent laryngeal nerves Parathyroid glands Carotid sheath Blood supply Sup. Parathyroid glands control the amount of calcium in the blood and within the bones. A Parathyroid scan is for localization of hyperparathyroidism or overactive parathyroid glands. They’re part of the endocrine system. thyroidal a. Inf. The parathyroid glands, which lie behind the thyroid, manufacture the parathyroid hormone, which plays a role in regulating your body's levels of the minerals calcium and phosphorus. Michelle is a new patient who is being seen in the endocrinology office where you work. You've just called her back so you can figure out what brought her into the office. Or, the extra hormones can come from enlarged parathyroid glands. Parathyroid glands control the amount of calcium in our blood. Hypoparathyroidism is an uncommon condition in which your body produces abnormally low levels of parathyroid hormone (PTH). You have 4 parathyroid glands. Everyone has four parathyroid glands, usually located right around the thyroid gland at the base of the neck. Seminar on Diseases of parathyroid gland Chairperson- Prof.Dr.M.A.Balakrishna Presenter – Dr.Nadeem pasha Historical Background: Historical Background In 1849, the curator of the London Zoological Gardens, Sir Richard Owen, provided the first accurate description of the normal parathyroid gland after autopsy examination of an Indian rhinoceros. Parathyroid Glands. If your parathyroid glands make too much or too little hormone, it disrupts this balance. | PowerPoint PPT presentation | free to view