Enlargement of the Pituitary Gland
Enlargement of the pituitary gland is usually due to a tumor but may be due to bleeding into the gland or involvement by some other disease, such as tuberculosis or sarcoidosis. An enlarged pituitary gland may produce symptoms such as headaches and, because the growing gland often presses on the optic nerve above the pituitary gland, a loss of vision. Vision loss often initially affects only the upper, outermost fields of vision in both eyes. Underproduction or overproduction of pituitary hormones may also occur.
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