Nineteen cutting-edge review articles by leading authorities provide a comprehensive overview of the normal function of the pituitary and of the diagnosis and treatment of pituitary disorders. Topics range from normal hypothalamic-pituitary interactions and the processes that disrupt them to new advances in pituitary imaging and appropriate surgical intervention in various pituitary disorders. Among the diseases discussed are congenital hypopituitarism, deficiency states, strategies for evaluating patients with hyperprolactinemia, Cushing's syndrome, acromegaly, and glycoprotein pituitary tumors.