Medically reviewed by Brian H. Wetchler, DO The adrenal glands are two small glands located on top of the kidneys. They ...

Phaeochromocytomas are rare tumours that start in the inner part of the adrenal gland. This is also called the medulla. They are a type of neuroendocrine tumour. They can happen at any age, but the ...

Arenal Volcano, Costa Rica's best-known stratovolcano, stands more than 5,000 feet high and appears to touch the clouds. For the latter half of the 20th century, admirers traveled to its base in ...

immune system and stress response aldosterone which helps to balance the levels of salt and water in the body sex hormones such as oestrogen and testosterone The medulla layer of the adrenal gland ...