D44: Neoplasm of uncertain or unknown behaviour of endocrine glands

D44.7: Neoplasm of uncertain or unknown behaviour: Aortic body and other paraganglia

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.

There are special nerve cells at the aorta in the chest. These nerve cells measure things like the level of oxygen and carbon dioxide in the blood. These nerve cells can use hormones to influence things like the level of oxygen and carbon dioxide.