GH1 and hypopituitarism: The term hypopituitarism denotes the deficiency of one or more of the hormones of the anterior or posterior pituitary gland whereas, panhypopituitarism is defined as the loss of all the pituitary hormones and the term is often used in clinical practice to describe patients with deficiency in growth hormone (GH), gonadotropins, corticotropin, and thyrotropin.