D44: Neoplasm of uncertain or unknown behaviour of endocrine glands

D44.9: Neoplasm of uncertain or unknown behaviour: Endocrine gland, unspecified

When there is abnormal growth of tissue, then this is also referred to as a tumor. The tissue in the body is made up of cells. A tumor disorder involves the cells multiplying more than normal. This results in abnormal or excess tissue forming. A tumor can be benign or malignant.

In your case, a gland that produces messenger substances is affected. The glands influence many processes in the body via the messenger substances. These glands can include the thyroid gland, the parathyroid gland, the adrenal glands and the pituitary gland.