Acromegaly is a hormonal disorder that results from the pituitary gland producing too much growth hormone (GH). It is most often diagnosed in middle-aged adults, although symptoms can appear at any age. Signs and symptoms include abnormal growth and swelling of the hands and feet; bone changes that alter various facial features; arthritis; carpal tunnel syndrome; enlargement of body organs; and various other symptoms. The condition is usually caused by benign tumors on the pituitary called adenomas. Rarely, it is caused by tumors of the pancreas, lungs, and other parts of the brain. Acromegaly is usually treatable but when left untreated, it can result in serious illness and premature death. When GH-producing tumors occur in childhood, the disease that results is called gigantism rather than acromegaly.