Why do doctors do an mri of the pituitary gland?

Pituitary: I assume that other hormones driven by the pituitary may be abnormal based on history, examination, and labs. The pituitary has a role in control of many hormones. There is a feedback loop between the pituitary and the different tissues that make hormones controlled by the pituitary. The MRI will show if the pituitary looks normal or not.