Others who, because of a tumor in the pituitary gland, may overproduce HGH develop a different problem: gigantism.
gigantism gi·gan·tism (jī-gān'tĭz'əm)
The quality or state of being gigantic; abnormally large size.
Excessive growth of the body or any of its parts, especially as a result of oversecretion of the growth hormone by the pituitary gland. Also called giantism.