Q89: Other congenital malformations, not elsewhere classified

Q89.2: Congenital malformations of other endocrine glands

A gland is a tissue which produces a specific fluid or messenger substances. The thyroid gland, for example, has this kind of tissue, but it is also in other organs.

While developing in the womb, many different types of tissue develop in the body. The organs and body parts develop out of the various types of tissue.