The cause for the excess growth hormone is most often caused by a pituitary gland tumor . If an excessive secretion of growth hormone occurs after normal bone growth has stopped, the condition is known as acromegaly . Either surgery, radiation therapy , or both will be used to treat the pituitary tumor . Bromocriptine mesylate may be used to further lower growth hormone levels if they remain elevated after surgery or radiation therapy. Hormone replacement therapy of other pituitary hormones may be necessary after surgery.
Pituitary surgery is usually successful in limiting growth hormone production.
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