Answer: Pituitary gland tumors can secrete excess amounts of growth hormone which results have different signs and symptoms depending on the patient's age.
Explanation: In children, over secretion of growth hormone as a result of pituitary gland tumour causes gigantism which is characterized by excessive body size and height. In adults, it causes acromegaly a condition characterized by enlargement of the arms and legs, thickening of the skull and jaw, excessive growth of bones and soft tissues, and pains including headaches.