SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY
Pituitary gland cancer. Coloured X-rays of a normal skull (left) and the skull of a patient with cancer of the pituitary gland (right). The adenoma (tumour) has caused the erosion of the sella turcica, the bony box that the pituitary gland sits in (dark square below centre on right- hand side). The pituitary gland produces hormones that control many of the body's processes. Pituitary tumours can cause hormonal imbalances due to loss of glandular tissue, or the overproduction of hormones by tumour cells. They may also affect vision by pressing on the optic nerve. Treatment is with surgical removal of the tumour, combined with radiation or chemotherapy.
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