Cells within the brain normally grow in an orderly and controlled way, but if for some reason this order is disrupted, the cells continue to divide and form a lump or tumor. A tumor may be either benign or malignant. Although a benign tumor can continue to grow, the cells do not spread from the original site. In a malignant tumor, the cells can invade and destroy surrounding tissue and may spread to other parts of the brain.
Attribution: BUPA
See also:
- Physiology of the posterior pituitary gland
- Pituitary tumor - adenomas
- Cause of a pituitary tumor
- Symptoms of a pituitary tumor