| Pituitary Adenoma These tumors are benign and are usually composed of secretory cells from the anterior lobe of the pituitary. Initially the tumor results in either an increase or decrease of hormone production depending on whether or not the adenoma is composed of cells capable of producing hormone. Increased levels of hormones can lead to either Cushing disease or acromegaly. Secondary effects of tumor growth can lead to compression of the optic chiasm which has a position slightly above and in front of the pituitary gland. Such damage leads to visual difficulties. |
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